My fiancee has a 1978 Mustang II and Ford or not It's a piece of S**t. To let you know everything that you may need to know before the question, It's a Black Ghia, with tan interior, 50,000 original miles, and was bought from an older man who bought it recently from an old woman who owned it in Florida all of it's life.

It has the original 2.8 (2800) V6 and runs like crap. It burns oil,..BAD everytime she hits the gas it blows a huge blue cloud. It barely idles and hates to run or drive cold or lukewarm, and when it does idle it sounds JUST like a diesel. We pulled up to a Ford diesel pick em up, and you couldn't tell the difference.

She loves this car to death, and had one as her first car. From what she tells me it was in such bad shape, it was dangerous. So it got crushed by a tree years ago and she had been wanting one again ever since. Well even though I'm born and bred with Chevy in my veins I found this one driving one day, looked it over and talked to the guy about it. We eventually bought it and it's been misery ever since. It tried to burn down my garage, tried to kill me by dying and not starting while crossing the street with a semi coming my way and the 9 year old in the back seat and so on... anyway I bought her, her own Christine. I hate this car but want to make her happy. She wants more power, so I suggested puting a 302 in it and rebuilding and storing the 2.8 for value purposes for the car. We found a guy with one out of an '83 Merc. The problem is, he only wants $75 for it, which has me worried. I had her ask him what is wrong with it and,.. he don't know if it runs or not. Money is tight right now and the only other one we have found so far is a 302 another guy is advertising "locked up" for $150, and I don't want to mess with a rebuild and possible ruined motor, especially for $150 this guy is smokin somethin good.

and now the question...
Will the '83 Merc 302 work in it ,and how much do I have to do, to disable all of the computerized stuff in a ford? Will it be worth it for that one, or a waste of time?