HEY new to the mustang scene just picked up an 88 Gt convertible 5 speed after buying an 87 Gt auto did not like the auto, any way I have built a 5.0 before but carbed, i started to order some performance parts like an e303 cam and aluminum heads, and found I was wasting my time since my car has the speed density set up? I now know way more about S.D. and mass air than I need to and found an original ford racing conversion kit used with no directions, finally my question, is it just as simple as plugging it in and adding the maf unit? also, what would be the next best bang for my buck for performance? thank you.