Looking for advice/insight on car

Suspension aside for the moment - 383s need rpm to really move. My impression is it's down on power - probably from tuning. You said the timing is 36° total - what are the seperate initial and centrifugal amounts? When does the centrifugal start coming in? When does it finish? Also - that convertor needs to be higher stall and I'm not a fan of Turbo action. Get a custom convertor from Ultimate Convertor or soemthing from PTC. I think UC is the best, but PTC can do a decent one for good value.