I ordered some flanges and a few 1-3/4" mandrel bend pipes from Hells Gate Hot Rod to get a start. Should get them this week.

I'm just going to start on the stock iron head 440 first. I need to replace the engine mounts first, they are in bad shape.

Pipe max is saying the 1-3/4" will be good for the first step, then pipe step to 1-7/8", then merge the "Y" into a 2" then into the collector?