I went through some chassis tuning on my old pump gas Duster to get the best results.
I would lower the ladder bar to the lowest hole on the chassis and then next raise the launch RPM if the ladder bar adjustment helps
I did end up with Koni SPA front shocks and Strange double adjustable shocks on the rear, I think it would run low 1.40 to maybe high 1.30 60 ft. times on 315x60x15 M/T ET Street radials launching at or above 3300 RPM
It was 49.5% on the rear weight distribution with me in the car weighing 3450 Lbs. full of fuel. It ran a best of 9.993 at 134.7 MPH in the late summer at Woodburn corked up on Oregon 91 octane non ethanol pump swill
It ran 10.69 at 124.+ MPH the first time out at Woodburn in the fall of 2005, .7 ET and 10 MPH gain with a lot of work and better parts
Test, test and test some more
Ain't learning how to go faster fun

indeed Cab!
I was honestly pretty pleased we gdations on total weight of car ot the car within a tenth of best in really nasty air and, was able to keep it there and that with a brand new carb.
I wore poor Dom out but, God bless him, he helped tech carb/afr remotely both Friday and Saturday- thanks again Dom!

Car is getting there, just not enough chassis rotation yet to properly use the shock.
I found hyperco does make a special spring at 130lb for Strange and think we are going to give that a shot.

These companies base their recommendations on total weight of car instead of unsprung weight, which i think CM tried to clue me in on and im just now getting my head around.
I think 130lbs may be just about right.

Yep, have fun, the problem solving is a blast.

I have a pair of 125# Hyper coils used for test fit. Pay the shipping and I'll let you try them out. If you like em $70 for the pr. If not send them back.
Doug

might take you up on that .
Get back to you later in the week.