PBJ, I am the member Mr Pat is talking about, have you tried to mate the two together yet? If you look at the 80E, you will notice the tailhousing is kind of offset from the motor. This gets it away and clears the headers. The 60E does not have that luxury and if you look where the tail housing and bell housing meet, there is about 1 1/2-2" that will be in the way and hit the corner of the block. Just want to give you a heads up on that. If you actually can make it work I will be very interested as I dont think my 5spd's will hold up to my N* and 150shot in the race car.
BTW, I have a Vin 9 300hp stock N* for sale, completely rebuilt
------------------