Got exhaust stubs from WW, that will make this go much easier.
Got these bends from Woolf Aircraft Products, Inc. from their scrap setup pieces for $5 a bend. It is a little heavy, .062 wall 304 SS, but it will last forever.
First make the manifold. I established a cut line .2" deeper than the front stub so I could form the metal back to the stub for welding.