Shoot me an email @ rsuttles@aerospaceprocessing.com or my home email waltersuttles@msn.com I will get you the list for the conversion parts. Yes the drive train holds up very well and have had no problems with it. The mileage should be close to what the factory setup was running. around 20 mpg going with the 5 speed is a must for highway cruisin though. You can use a 700R4 but everyone is different. And I work them first in first out and do one at a time. Hope you get the bug.
If you don't mind sharing the parts list for the engine swap. If you have one for a 350 vortec I would like to get a copy. Email me at elbertclarke@bellsouth.net I have the engine, but I've yet to get the wiring harness, swap kit "bellhousing" and other misc parts. Had to spend some $$ on other things that have gotten in the way.