My friend, Dicky Griffin held the record in A/GALT [ unblown gas altered] at 229+ mph for several years in the 90s with that style Camaro.
Big block injected chev, Cu.in max for A, was at 482 if I remember right, now at 500.99
Dicky was a part time engine builder Bville and boat racer.
If you make that much hp you should go close to that speed.
It seems if chassis passes NHRA specks for 9 sec there should only be a few fixes for SCTA, probably gussets at tube junctions, but maybe you already have them.
The roll cage pic, in rule book is confusing as it shows way more bracing than required. Call the SCTA before making a lot of changes, and deviations are considered.
Also, engine might have to be detuned to last 5 miles.
JL222