So still goofing around on my project when I should be doing something else, I stumbled across this page on ATI's site. It says there is a bell housing adapter from chevy pattern to 1FZ. Which would make it quite easy to run the chevy transmissions I am guessing. You pair that with Mark's transmission to transfercase adapters and you should be able to swap a beefed up TH400/700R4/4L60/4L80/6L80 type transmission behind the 1FZ and still keep full-time four wheel drive.
ATI Powerglide & Turbo 400 SFI SuperCase® Transmission Case & Accessories
Chevy Bellhousing (only) modified for Toyota 1FZ-45 Adapter kit
Just an idea for those of you that want a better trans but want to retain 1FZ and also full-time 4wd.
Here is the rest of the kit:
http://www.atiracing.com/products/adapterk/akit.htm
ATI Powerglide & Turbo 400 SFI SuperCase® Transmission Case & Accessories
Chevy Bellhousing (only) modified for Toyota 1FZ-45 Adapter kit
Just an idea for those of you that want a better trans but want to retain 1FZ and also full-time 4wd.
Here is the rest of the kit:
http://www.atiracing.com/products/adapterk/akit.htm