I think it is a double whammy. The custom pistons along with the custom headers put the b1's out of most people's comfort zone. Someone tool up a 2.25 header that will work on an A B or E body and I bet you would see many more. Probably some of the best money koffel's could spend would be to get a shelf header and pistons. The b1 has had it's day as the cutting edge race head but as a big inch street and strip or fast bracket alternative it could be a whole new horizon. I believe it would be just a matter of making the needed parts readily available.