Thanks Xmuni! IMO, your chances of getting them in 7 weeks is good. Mine's took 10 weeks(worth the wait), and were suppose to be completed in 5 weeks. Like you, I also ordered the wheels prior to purchasing the car. Yes, those are 18x9.5 and 19x10.5 fully polished w/clear coat. Originally, I ordered the p-zero's as well, but found out that the 295/30/19 rear tires were on back order for 2 months! I then desperately looked around and found a set down in Southeren Ca. Although there was a price to pay for these($400 each), I knew that p-zeros were the only one's that I wanted. If you still have time to change your mind about getting p-zeros, a place called Grand Prix Performance might still have an extra set of tires for the rear. Their number is (949)645-7702 and ask for Jerry. As far as lowering goes, I bought the longer bolts for the rear. Upfront, I tightened the bolts and removed the bushings. Bilstien Shocks are utilized as well. I am not happy with the front end of the car, so I will most likely remove the adjuster bolts completely. A special thank you goes out to Bwhitmore for ordering his 545's 1st. If it wasn't for him, I would probably never order mine's. The size of these wheels/tires look and match perfectly for the Z06. The picture just doesn't do any justice! Again, thanks Bwhitmore!! Xmuni, good luck to you and your car!!