Not trying to reopen wounds here, but, the engine in my sig pic was built by Mike at MRL. Life has dealt me and my family some lemons starting not long after I paid him $11,000 for my 360 and so I still haven't started the engine. It should be started in the next couple weeks as the restoration/reassembly is being completed. I didn't read this thread after I posted in 2017. Just seeing all this now. Your comment about him not porting the heads calls to mind what my dad said when he pulled the tape off the exhaust ports... "It doesn't look like these heads have been ported". I questioned Mike and he said they received full stage 3 CNC porting. This is my first build ever so I'm not very mechanically inclined, and, at the time, naive and trusting. I have a dyno sheet that says it made 534hp and 484 ft/lb. It's a standard bore 360, not a stroker.
All I can do at this point is cross my fingers that it runs. After reading all this, the power it does or doesn't make is irrelevant. I can't do anything about it now anyway.....