How much difference will it make?

Ok so here's my set up back in the day, street/strip Cuda. 300hp@the track motor., max rpm 6000. 484/284 MP hyd. Stock 340 springs clamped@front, 727 with super holeshot verter. MP shocks with 2" extensions, stock front shocks, snubber 1/4" from floor, stock T-bars, 3.55's/posi, no sway bars in sight. Full weight ran 13.2's@101. Car used to lift front way up on the street when on it some even with road tyres, drove great. Ran it with 8x26" slicks prior to 10x28's same times. Just for some info>

340 hit.jpg
Just one note I would say is to hook radials you need hp.