bringing this back since it hasnt been updated in a very long time. ive read countless pages on split port swaps,and have yet to find a step by step guide to doing it,nor are there 100% answers to some of my questions. i have a 1995 mustang,it has an auto trans, i want to put a 1999 complete motor into it( the one in it is blown) my main concerns are the wiring changes and what will i have to do to attach that 99 motor to my 95 auto trans? and depending on who you ask the parts list needed will change every other post, maybe its just me but there doesnt seem to be solid guide on how to do this,not to piss off the op there is alot of good info here,it just seems sloppy.
That's because there are several ways of doing things. Also there are many different combinations of what you are starting with and what you are swapping to.
The 95 and 99 motors use the same balance, bellhousing, and flywheel pattern.