Interesting. It looks simple enough to make, but at $35 it's probably better to buy.

I wonder why Holley for instance doesn't make the flange on their pickup with a second bolt hole? Is anything fastened to the second bolt hole? I.e., wonder why it's even there. Looks like perhaps the second bolt may be hard to get a wrench on.

Also I wasn't aware that BRP had expanded their product line to 55-57s. I hadn't looked at their stuff in a while, looks like they have some good stuff.