ride quality

Hi all, I've kind of decided my car is too stiff for the street; it's just not compliant over normal bumps and the car is simply jarred around too much by otherwise pretty good streets. Now, the car is lowered, I think probably 1.5 inches all around and the previous owner put the lowering...

I have stock 03chrome cobras and 18r so close to size and 19cost so much I was wondering who has done it... ride tire clearance ect Id understand offset and wheel widths will make a difference in fitment... With that said my car is lowered with her ss springs... I and my exhaust drags i assume...