ok i have a 91' lx hatch and looking for a engine. just wonderin but if i got a engine out of a 87-88 mustang would i have to change anything on the engine since mine has MAF and 87-88 has speed density? i am looking for a engine to buy that i can just drop in and not have problems. just wondering because i have seen a few good engines that are from 87-88 mustangs but not sure if i have to convert something over to MAF. i am almost positive but not sure what to do. if you guys could help it would be great, thanks,

 

anyone?