Here's what I got: 1-3/4" steel primaries, into slip-fit steel adapters, then inserting into 2" stainless collectors and sidepipes.
Q: how to fit up everything? I believe I'll weld the adapters onto the primaries, but then what? I don't think welding mild steel to stainless is a good idea.
Options: 1. Using header wrap and clamps like Roscoe did.
2. (Here's where I'm open to suggestions).....
Thanks again you guys.