small block electric water pump

i contacted CSR about this, ya can't use the heater, no provisions. However, they did tell me it would be okay to drill a hole for a 1/4" NPT pipe thread fitting to run a line to the bypass on the manifold, of course you would have to reduce the manifold outlet a little. the green dot in the pic is where u would drill the hole. i didnt do it, i decided to use a standard water pump.