THE TRACK LIMIT OF A 4th GEN?

ok, so this is not about w2w. all about track days / hpde.
I am at a stumbling point, participating in Porsche Club HPDE,
Black/Red Advanced Racer Group, I am getting passed by 2016 Cayman Gt4's, and 911 Gt3's., and newer cup cars.
Very comfortable in the groups, 50% pass/ 50% I pass.....

I am at the point of sliding the car, just to keep up, albeit controlled.

Have I reached the limit of a 4th gen?

The car is a 1998 Trans Am, built by Wheel to Wheel for competition in the 1998 Motorola Cup Series,
then Grand Am gt, then AIX,Ite..........

Should I Accept as is, or is there something to do (cost effectively) to be quasi-competitive..
(Remember, it is only HPDE/track days, not competition)

Specs are: 1998 Pontiac Trans Am, ls6 (little cam, 392 RWHP, full cage,, 3650 w/ driver, nascar front bar, one off adjustable rear bar,
heim jointed rear links (all)
heim /roto-jointed front upper and lower arms.
Auburn R/R carrier, 3.9 rear,
295/35 Hoosier R6's...
Full Cage,
New Trans,rear, brakes, tires, wheels etc..
ALl updated....

Have I reached the limit?\

New Member/New Car / HPDE&Trackdays/Help NEEDED!!!!

New here, and seems to be the place to be....
Short history, started HPDE last fall at NJMP,
After 10 days went and bought a
1998 Trans Am, which was built by Wheel to Wheel in Detroit,
ran Motorola/Rolex GT 1998-2002, then became ITe/AIX car.

Now it's a HPDE /Track DayCar
THat I am TRYING TO SORT>>>>>>>>>>>maybe TT in the future..

MAJOR ISSUE: BRAKES SHI**TY............Must hit pedal 2x's to set up for turn....
Specs:
1998 Trans Am / 392 RWHP LS6 / Son of TransZilla T56 (yea that was a 5k mistake, visit that later)
SLP Konis, rear adjustable seats, Front NASCAR sway bay, Rear Blade Sway Bar
17x11 CCW275/40 17 R1's

Need insight on how to make this car brake as well as my 13' 1LE Camaro
currently , WW 6SLR fronts, new rotors, new hats, PBR rears
Corner balanced to 49.8 % a week ago, (still LF ride height 3/4 lower, so I screwded up
my first attempt!!!)
Car has proven history,
looking for insight on how to make right!!
Thanks from new guy,
Rich
hookdup@comc a st dott net
ps how do add pics on this forum??