A little bench racing

Ok folks, another what do ya think question. Curious as to where you would shift this turd at? I realize I don’t have the optimum combination but working with what I have.

440 stock bottom end, forged crank, stock rods, pistons. Unverified CR guessing 9.5ish. 180 cranking compression.

For the sake of argument, stock 915 heads. Was told they were “mildly ported and the chambers cleaned up”.

Comp XE 275 HL with 1.6 rockers and B3E geometry correction. Pic of cam card

8DBA5161-6007-4508-B3B5-F5D6BC7C39BE.jpeg

Schumacher headers

Weiand tunnel ram 2 750dp w/annular boosters.

727 3k +\- stall

Dana 60 w/3.23

3500 lbs w/my lard *** in the seat and full tank of fuel.

I’ve been shifting @ 6k, curious if maybe shifting at say 5k would possibly have any benefit? Just thinking out loud, killing time in my head.