i need help

[Chevysucks]

Hi i have just recently purchased a 1980 ford mustang and it only has a 4 cylinder in it. So i e-mailed someone at another ford site and asked them if i could fit a 302 in it without cutting out the fender wells, and they replied and said that i could do that easily and i could even put in a 351 but i would have to replace the whole drive train. I am wondering how much $ this would cost me, I am seriously thinking about putting the 302 in it for now since it is just going to be an everyday driver, but i would like to get it into at least the 12 second zone in the quarter mile. If any one could help me out I would appreciate it.
thanks,
Jeremiah Smith