Here are my newly mounted Starke Design SC18 with Toyo Proxes T1 Sport tires on my 2001 986 S. The car is lowered on H&R springs.
I like the more aggressive offset of these wheels compared to stock.
As for weight, I feel no difference in acceleration.
I ordered black lug bolts to replace the stock silver lug bolts and I have Porsche center caps I am painting black to match the wheels.
When you look at the back of the Starke Design center caps, it looks like they took a Porsche style center cap and the have their cover over that - if you can find the Porsche crests cheap enough, you can make the Starke center caps look OEM.