I have a machine shop in my home garage. Mill, lathe, tig, bandsaws, sheetmetal brake etc. you know just your typical home shop.

So, I like to make as many parts as I can. Here are a few of the home built parts.
Universal radiator modified to fit with a sheetmetal fan shroud.

Crank drive mandrel

Valve covers

Homemade crank trigger

Headers, downpipe and intercooler piping.