[Mustang5lx0]

Well it's tax return time and I get a little bit of an allowance for my car, my two biggest options are. Purchasing everything needed to build a second rear end with 3.73 gears, 5 lug conversion and rear disc brakes (wheels and tires included). Or I can purchase a PMS series 4 system (stock computer is at its limit for the motor). What would be my better option at the time...I plan on the 5 lug conversion and disc brakes in the future either way. Just want to see what others think would be the better by at the time.

[oneFASTmustang]

as for the stock computer you're at your limit you say but not beyond it and your putting down some solid numbers so I say upgrade the rear end.

[oneFASTmustang]

but why cant you use a SCT 4 bank to tune the vehicle. Can you not because of the cams, heads, etc...

[RLG34750]

you are far from the limits of the stock computer unless you are running 8's

go with the gears....

[EagleAutosports]

The computer has some more room, so I'd have to say do the rear end.

[Mustang5lx0]

yup gonna buy the 5 lug stuff first.....is there any way to make 98 cobra spindles work with 91 stock k member? did some reading and so far not but i thought i might throw it out there for someone who might have figured out the trick.

[1988lx5.0L]

there are two things you can do to add the 98 spindals to your car, firstly you can change your ball joints to the sn95 ones they are not as long as the fox ones or you could use a spacer or washers between the nut and the spondal to make up the difference. Also with the 98 spindals they are waider than the 94-95 onse and you may have a clearance issue however it is different on every car

I hope this helps