Stiff front end looking at aftermarket solutions

Pinion angle 6 degrees noise down
No front or rear sway bar
Ride height?????? In the front, is 5" of up travel. With this new upper control arms
i my have more now.
At the moment, i'm running 15 psi. With less i just wad up the slick.(running tubes)
I stall at 1500 and then wack it off the line.(4200 stall)
What did i miss......o and yes i have a pinion snubber that is set about 1" of the floor.
I got to crawl around a B/SA 440 sixpack E body
They accomplished mid 10s with similar to yours super stock springs, I bought there old springs, they tossed the pinion snubber away, as they claimed didn’t need it with those springs.
They stiffened the front, and limited the drop of the suspension, with a sway bar, and the rubber stops on their car only allowed a small amount of up travel. This allowed the wheels to come up quickly and they had average wheelies of 70-100’ also no drag shocks.
Similar to yours they had around 5-6 deg of nose down.
I am pretty sure the front end height was set at I would call at race low height.
Bring the ride height down, not up.
I think the class was limited to 9” slicks.
Air pressure is a matter of preference, but 9-12 is pretty normal, and I’ve ran 6-7 to get a car off the line.
Try and not load the suspension any off the line, as that was a loss of a 1/10 every time.
I get what your trying to do by allowing the front end to come up easily, but your faster cars limit the drop, as that allows chassis rotation.
Do you have any side profile shots of your car at rest? Any pics of your car leaving the line?