[mustangman65_79]

They now have a kit to bolt in a 6-speed tranny. So u could use your 4:10 with a six speed.

As for the motor, u can run a 302 to get used to ther power, but if u want to race at all, I'd stick a 351w in it. I can be stroked out to a 427, but thats the max, and I wouldn't ever go that high. I heard a 396 bore on it is the best bore. A 289 is a nice motor to have, but it's mainly not a race motor, don't get me wrong, it's strong, but u can get a 302 for less money. U can put in a 351w, leave it stock till u get used to a v8 and don't wrap yourself around a tree, so later on, since u already converted it to a 351, u can build up another 351 while driving the stock one, then put it in when u are done. A 351 fits in tight, but with few mods. More power with only a little more money. Plus u can have the bragging rights that u put in a 351 in your stang and stroked it out to a 396, 408, whatever. few other ppl can say that.