I like the idea of a street tunnel ram.

I don't think I'd tee them into the metering block like the seller did, though. That's for the spark advance and the vacuum secondaries should open by passages already in the secondary housings. I think with them teed into the block, they would either open too soon or (more likely) not at all. Just use a single vacuum line to connect the two caps together and plug the ports on the metering blocks, or hook the primary one to your distributor advance. My 2 cents.
Pat