Those SVT wheels do look great, what are the specs on them, width, offset, weight?
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I have Konig Dial In, 15x9, 13lbs, roll formed, -1.5 rear, -2.5 front negative camber, rolled and pulled front, rolled rear fenders, the car is lower than it looks, the tires are not very tall, I might switch to the 245/50/15 RA1 DOT race tires instead of the 245/45/15 RA1 tires I have on right now.
4x100 bolt pattern change was one of the first mods I did so I could get cheap quality track wheels, roll formed which means very strong, for $126 per wheel! The 15x8 version is 12 lbs and around $119 or it might be $109 each. There are others available as well but some will not fit over my 11.75" BBK.
I can only lower the car around 1/4" more in the front or will go past the optimum for roll center, something I would never do on a car built to go around corners.