I came up with a idea today since alot of us allready use LCA brackets.Its kind of like the lakewood lift bars just fliped upside down and use the stock rear bracket.

No. They will bind and have a potenial catastophic failure. The LCA front and rear mounts need to swivel on a 2 plane axis (up & down, and side to side swivel). The front mount will do all the workfor the side to side which is good for drag racing only, however, the up and down swing will not match the swing of the TQ arm and can (and will) potentially break the LCA. Its very inportant that the back mount swivels up and down when combined with a TQarm configuration like we have.

Do this test and you will understand better-

1st, with the car jacked up on stands (on frame) and letting the rear end hang fully dropped and unloaded, measure the distance from the front LCA bolt to the rear top bolt that you have circled in green.

next, put a jack under the diff and raise the axle back up towards ride height (compressing the rear supension. Now measure that same distance again. It will change (lengthen in distance)

Conclusion- it you were to attach that upper support at a fixed point along the front of the LCA (front green attach point) it would break there over a short period of time. from baring the strain of the bind.

I see what you mean it was just a idea

If you make something like that strong enough you could remove the torque arm and have extra good traction with extra $hitty stoping traction. You may also need an axel movement limiting thingie because the axel may break the shocks and try to pass under you.