fellas, i have swapped in a 360/th400 into my 715. it is pretty easy. you will need to get the engin mounts from the 360 and use them. i like the swap, but if you are wanting to upgrade, i would get a chevy and the th400. lots more parts and i believe that the swap is even easier. just my imput. but i really don't know a whole hell of alot. =)