88 Cougar 5.0 into a 88 2.3l stang

I just got finished searching this topic and got some good info but this is what I am lacking. I have a 88 cougar with the 5.0L( Im guessing Speed Density) it has a posi 8.8 rear and an AOD Tranny. I know this motor sucks but what can I do to make it semi decent and Im not looking to spend alot of money. Im going to put it into a 88 2.3L 5speed car.
What are going to be my main problem childs with this combo. I would like to stay EFI at all costs. Basically want will I need to get off of a 5.0 Mustang that I am unbale to use off of the cougar.I know a double hump cross member, motor mounts, fuel lines, and Im fubared on the wiring harness and what i should do about it.What is the cheapest but yet productive wiring harness option that I have. I am also thinking about finding a 5spd tranny instead of the AOD since I like the 5spd better. I know I cant use my current 4cyl tranny.A: should I atempt to get another donor car from mabye a junk yard (5.0 stang) or B: Should I just rob parts of of one in a junk yard. If B: then what parts do I need. Thanks in Advanced for any helpful information. Sorry for the long post and the repeat post on this topic.

Im sorry I thought I might have got some valuable information from this forum but I guess Im not in the "IN" Crowd. Didn't mean to stomp on your more important issues. It makes me happy that my bike forum people welcome newcomers as soon as they post.

Im just doing it cus im bored and have two pieces of ****, so why not make 1 big piece of **** with a little more class.so I thought about bore job to a 306 for so more performance you never know maybe I'll actually build a decent 11 sec car, and I just scored a set of mustand heads for free..thanks for the reply

Why is that?

Yeah but the part I hate the most is wiring. I think i should rip out the dash again and replace the whole harness underdash and underhood. I have easy acess to the dash since I replaced the heater core and said to hell with all of these extra screws and just put enough in it so it doesnt shake.

I love Pain. I was joking about the underdash wiring. My buddy had some wierd combo of wiring harness he did, but he could never get the fuel pump to work coreectly so he straight wired it and that is what I am trying not to do. Im going to call and find out how much I can get a full harness from the junk yard with ECU.