New engine build thoughts

My guess is( based on the Seattle 6.92 number), s
it will run 6.50ish in the same conditions you ran the 92 in.
Just my thoughts, but to me the cam is leaving a good bit on the table. Something like what you have i would probably be 265 ish@ 50. Maybe even a tiny bit bigger than that. Stroke kills duration. And you have plenty of compression + alky, which effectively makes more torque.
Also you still have the same heads, they are without a doubt a limiting factor on a/ any 4 inch motor.
Dont see it getting out of the mid 6’s( still impressive), looking forward to your results. Good luck.