I got about 5/8" on the stock bolts.
It is a nice noticable difference. When you change tires you can go up a size. I use the Nitto R2's and 275 frt 305 rear. This completes the package as the tires are a bit taller, or at least they look taller.
This set up was driveable and I have the speed bumps too. It will not hit them if you go slow. I have a sttep incline to my driveway and the outers did scrape.
The center air dam is there to scoop air to the radiator. Cutting may not be wise. I hate the scrapping sound for sure, but the center is spring loaded and will swing back into position. I though about a taper trim and bought some extra outers to experiment. But have not done so.
I do not have any pics to post when it was lowered on stock bolts. The car is even lower now with cut bushings. I put the wheels on the front and welded them. This is a life saver when you are real low. I have yet to high center the car, but am pretty careful. I don't drive it much so it's more of an open track or weekend crusier. If I had to drive it everyday I would just lower on stock bolts.
There are plenty of pics in the archive if you search, some good before and after shots as well. It won't look like much at first, drive it and it will settle. I think you will be pleased.
04 MS. 361 rwhp .ET 12.44 @116.5 mph. Cryo, PFC01, DRM /PHX, T1 bars, BK HB, Crow, Forza,170stat, Hardbar Knob, Cags, Redline, Vram,Chromes,3m Bra, Lowered 1". Goodyear GSCS F1's & R370 Eagles