I'd have to think about this a while and do some calculations and plots to be sure, but it looks like that would cause the upper arms to pull upwards on the floor. That would make the rear separate and also make the front lift decrease.
I'd be a little careful with upper arms that are not adjustable yet alter the arm angles.
That "hit" only increases pressure until the axle settles in final position, and it would tend to seek level upper arm holes. The rear axle housing reaction to counter the tire force on the track tries to roll the housing top backwards.
My car comes out about 10,000 pounds pulling back at the holes, or 5K per hole. If you get that force line high it will put the car right on the bumper, so raising the arm rear should reduce front end lift.
My car likes the upper arms angled slightly down to the front before the hit. If I get my upper arms high in the front it goes on the bumper. If I get the arms angled down too much to the front it gets no weight transfer at all.
I have a Wild Rides S box.
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89 LX. 363, single turbo, Super Vic EFI, TFS high port heads by TEA, solid roller, glide. Holley HP EFI. (exact combo varies)