Regarding the manifolds, i remember Jerry and i spent a lot of time going back and forth in our PM conversation. It all centered around, "As i move downstream along the exhaust system, at what point do i no longer need to use new (i.e. DOHC) parts, and simply have to fab a connector or a bend to meet up with the remainder of the original exhaust system?" I take it that's where you're at now?
How are things looking, otherwise?
1992 Amigo S 2WD 4ZE1 5spd "Pequeña Blanca" Went on the hunt for a sensible, practical commuter car and instead I ended up buying this.
1997 Trooper S-Pep 5spd "Midori" Project car; engine rebuild currently on pause due to new job across the country.
1990 GMC Suburban R1500 SLE 350TBI "Regina" Daily driver from 2005 all the way until I bought the Trooper in 2015. Has resumed a well-deserved long nap until I can throw in an LQ4 & T56.