SB vs BB who wins?

Dmopower said

I like the B also, Thank you. I just picked up a couple early 400's and a few industrial 413's.

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I have 1 more 73 400 block, I'm going to try grab a few more if they come up.
1 has a mainline crack and I use it for mock up but I'll do some experimenting with it also in the future.