Smitty & John...many thanks. I hope that one day my '56 TF panel will look that good. Sachse Rod shop in Texas has a universal crossmember for biscuit mounts with 19" centers and 250 engine mounts for the same spacing. Crossmember, engine mounts, and biscuits appear to be about $110 plus shipping. That is probably how I'll do my truck. I don't mind welding, but I'd like to keep things as simple as possible. Thanks again for the replies.

It is really nice that so many folks are willing to help and pass on good information!