I just added these to the website - electric water pump brackets. These work with the Moroso/Jegs/Summit style conversion kits. The bracket is custom designed (by me) to fit the common block water pump housing. It's 3/16" (0.19") thick aluminum, black anodized. The bracket is small enough that it will require using a shorter belt than comes with the Moroso kit (L050-187 vs. 210). And, you'll probably want to use a bigger pulley on the motor to keep the pump speed up.
I put these up for $30 and I only have 4 for sale right now. If they sell well, I'll consider getting more done.
Please excuse the dirty WP housing. It's my mock-up part.