Yup, I sure did post the same question multiple spots. Y'all missed the NCRS Technical Discussion Board.

I've gotten some good responses on all. The NCRS Board did come up with something no one else did. A gentleman there told me that there is a 3" freeze plug on the front of a 235 block that should be left out for a Corvette due to the unique water pump (made for the low hood). I know the water pump is unique, 'cause they are $600!

Will let you (and the other groups) know what is found when the pan drops next week. Thanks for the responses.