Compatibility with SBC & tr6060

[Nate007]

Has anyone mated a tr6060 to a Gen1 small block? I've got a 68 Camaro with a late model, one piece rear main 383 in it, and am wondering what the length/depth differences are between the TKO600 that's in it now and the tr6060 thats going in. Just need to figure out which flywheel/clutch setup I need (dimensions wise) and any special slave cyl or spacers, etc that I might need?
I know with the LS based t56 there's a special pilot bearing to use when going to an older small block, but mine is a 1pc rear main seal motor.

Any advise for what to do inside the bellhousing? I've got the other fitment issues dealt with, and don't need the slip yoke/ Magnum conversion as the car has the Heidts Pro-G IRS. I'm using a custom driveshaft and the stock type couplers, so I've got that handled..
Thanks!