I'll post that Comp number for you. Don't have it handy right at the moment.
For simplicity I'd recommend the earlier TH350 that doesn't have the lockup convertor. The very early TH350 also had a drain plug on the pan but only until around 1969. Not a big deal as you can add a plug to the plain pan or even use the earlier pan on a later tranny if you come across one. Just makes routine screen changes less messy.
