Trying to ascertain if Im close on my ladder bar set up. Car weighs 2138 with me in it, 188 lbs. heres my corners

LF - 468 RF- 453
LR - 639 RR-578

SBC maybe 550 HP Vega Rectangular tube with strut front and coil overs on rear. Big tire. Your comments as always are appreciated.

When I was running ladder bar set up I never scaled car but it was pulling big wheelies and I had to add some preload / move weight to right rear. Once I go it right it would go nice and straight wheels up.
My guess as your car is if it is pulling wheelies it will go to the right - add some preload to right rear until it goes straight then scale car and keep that as your baseline.

The car will probably be just fine as is if front wheels stay on the ground. Wheels up car will tell you what it needs.

Doesn't look bad honestly. I agree that I would run that and see what it tells you. I have never had a ladder bar car to mess with though. My four link car isn't quite as balanced as that looks like and goes straight with the wheels in the air.

LF-509 RF-456
LR-521 RR-515

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I run a 2800 ladder bar car with about 830 HP. Your weights are about right. It's more important to make sure the rear axle is squared in the car. Right to left and front to rear. Can you move the front of the bar down a hole? Mine is currently 6.5" off the ground.

When squaring my car, I discovered the left mount was 1/16" further forward than the right. Easy fix. Screw the left Heim out one full turn.

The biggest deal is shock adjustment and tire pressure. My car wanted 12 pounds of tire pressure and for rear shocks full soft on compression and 19 clicks on a 24 click range for rebound. The fronts were the hardest for me to sort out. I don't remember the setting on those. I still get that little bounce on the front I can't seem to get rid of.