well ive been looking at alot of used motors on craigslist for really cheap but dont know if they will work in my truck, for example i have been seeing alot of 350's (mine is a 94 with the 5.7 tbi that is blown) what i want to know is if i buy one of these how do i make it run with my computer?????? is there somewhere i can send my comp in to be redone for the engine or what????? what do i do cus i would love to buy one of these 500$ motors and drop it in but i want it to work. thanks yall