Just bought a 66 Mustang Coupe with a 289 for my wife last week. Body is in great shape with solid floors!
Here is a list of things that was already done to the car when purchased
1. New wheels and tires
2. Fiberglass GT hood
3. Front brakes converted to Disc
4. New suspension( shocks,springs,leaf springs, control arms, tie rods etc.)
5. Pertonix coil and ignitor
6. rear seat new upolstery
7. Tail lights converted to LED
I think there is more but this is all I can remember for now.
Here is a list of parts that are brand new and not put on the car yet when purchased.
1. New front seat upolstery
2. New sound deadening matting for under the carpet
3. New pre molded carpet
4. New instrament bezel
5. New tail light and exhaust bezels
6. New door handles
7. New mirrors
8. New door panels w/arm rests
9. New windshield and rear window seals
10. New headliner
11. New back up and turn signal lights
12. Found a Edelbrock performer 289 manifold in the trunk w/ a shop manual (this is going on the new motor)
13. New window crank handles
14. New hood seal
15. New emblems
I think there is more to this list also but can't recall everything
Here is what I'm having done right now
1. New 302 roller motor beeing built to replace the old wore out 289 but using the old 289 heads on the new motor and having a new carb put on it
2. Having the C4 completely rebuilt
Here is what I just ordered or bought for the car already (sure there will be more to come, LOL)
1. JBA full exhaust sytem (headers, H-pipe, rear section all the way out)(had to cut out the old pieced together system that was U-bolted together so tight that it locked everything together)
2. Kick down cable (old one was broken)
3. Neutral safety switch (old ones wiring was chewed up)
4. Engine to firewall ground wire (old one was frayed and rusted)
5. New water pump for new motor (not going to put a old water pump on a new motor)
6. Valve cover gaskets
7. New
tranny dipstick tube and dipstick (old dipstick was broke right at the top of the tube)
8. New heavy duty motor mounts (old ones were dry rotted)
9. New oil pressure sending unit (not sure if the old one worked so replacing it anyways)
10. New stainless steel
trans cooler lines (old ones are not leaking but beat up so throwing in some new ones)
11. New radiator hose kit ( self explanitory)
Future plans for some of our Income Tax Return money
1. Complete A/C Kit from Vintage Air (It gets super hot here in Phoenix and this is going to be the wifes daily driver so she needs A/C for her and our 9 month old daughter when she is driving her around too!)(we were going ot get the A/C kit now but after having to get the exhaust system we are short for the A/C kit, so we are getting it after Income Tax Return now)
**Update**
Took the whole interior out this weekend! More money to be spent! LOL, took the seat covers off the original seats and found that they need some TLC! I have the new upolstery for them but I need 2 new seat rails for both and seat buns plus the cost of paying someone to do the work on them. So I decided to just buy new seats from Mustangs Plus, I will end up spending more on new seats but they will be a lot more comfortable. Going with these seats!
http://mustangsplus.com/xcart/produc...at=2233&page=1! I also need to order new insulation foor the floor, firewall and seat divider to go with the carpet and sound deadening mat that I already have. So I am starting to come up with stuff that I won't need and would like to sell.
1. Original 289 block with rotating assembly still together including the oil pump and timing chain.
2. 4 barrell carb that came with the car (I'm going with a Edelbrock 625)
3. Original seats
4. Original intake manifold
5. Original hood
6. New 2 tone Blue bucket seat upolstery
Anyone who wants this stuff or knows anyone that needs it let me know!
The 1966 Mustang project for my Wife! 
