Many thanks, Roger. Those rpm numbers don't seem so bad to me but I'll wait to hear/see how it actually behaves.

What option do I have for an OD gear? I know about Gear Vendors OD units, and I know the 200R and 700R trannies have OD; when I was looking into rebuilding my TH350 I got the impression that some of the short tail 200R's are the same size as the TH350 and can also be built to take decent HP/TQ. I thought the TH400 was quite a bit larger and I don't want to start hacking to fit this trans. I also gave the evil eye to the Keisler manual trannies which are very nice but I wasn't ready to change to a stick yet.