Np 205 questions

[57taskforce]

I've got some questions about the 205 case. First a little info about my truck. It's 1957 chevy on an 88 k-5 frame (yes I know by 88 they used the r/v designations) it's got a mild 350 with a vette spec 700r and 208 case. 14 bolt ff rear and 3/4 ton cooperate 10 front. 4" suspension lift and custom cab mounts that combined easily clear 35's... I'm in the planning/gathering stages of a semi major drive train build up. To include: gm dana 60 front, 205 case and I'm hoping for a 4l80e. I've got the 205,turbo 350, and the 350 adapter and crossmember from a 72 k10.(I have no desire to run the th350 or 700r with the 205) My question is what do I need to do short of the advance adapters kit, and the holy grail 1991 80e to 205 adapter, to mate a 205 to an 80e? I've done a ton of reading from pirate,ck5, and a few other boards but everything I've read seems to contradict in some way or another. I realize to use the 205 I've got I need to replace the input gear,bearing and machine the case which isn't a big deal. I'm more worried about how the hell to mate the two. So I'd like to hear from people who have done this swap. I'd rather avoid the he said, she said, and hear it straight from those who have done the swap. I want to know what length output 80e you used, which 205(racetrack or round) and how you mated the two? Thanks in advance and I'm sorry for all the reading!