I have a 1986 Foxbody too. An alternative is to find an engine out of a 5.0 Explorer if you can get a good deal. They have the GT40 intake, heads, and ect. Then port out the intake and heads. You could also snatch up a couple of junkyard parts like electric fans from a 5.0 cougar and then convert over to MAF. Did you give rear end gears a try yet? I have 3.73s and it was a huge step up from the stock 2.73s. Another important thing is sub frame connectors. I still need to buy or make some for my mustang.