I have a ebay cast iron t3 manifold with 2bolt 38mm wastegate flange. $75 shipped
I also have a custom 420a t3 stainless manifold with egt bung and tial mvs wastegate flange. All stainless steel and tig welds. I was not able to fit a gt30 turbo with slim fans on this manifold, so only smaller turbos would work like the hahn 15g or 16g or similar. Might or will need some fabbing for your set up. $120 shipped obo.