someotherguy
+1y
Dorman makes brand new exhaust manifolds for a lot of apps, including the big blocks. My bud got a set for his '89 dually (OBS) with 454.
Yeah they're probably cast in china out of recycled Hondas, but whatever.
They're like $100 + $150/ea depending on what side, from NAPA, but NAPA just re-brands the Dorman stuff. I'm sure you could get them at VatoZone cheaper.
Richard