Closing the S gap for a 2.5...tall order

[truegearhead]

It is a duel purpose car so I dot want to go to extreme. Right now I'm Ventus RS3s which are worlds better than the summer tires I've run in the past but I'm going to make the jump to slicks soon. I can't remember the name of the site but I know a few guys that buy Hoosiers and continental slicks used from them and have had great luck. They charge about 100/tire. I need to figure out what size I can get away with and what wheels to put them on first. As far as weight goes, I wonder how tough it is to remove the top for an autocross? Mine is already converted to a manual top. I've also already installed gt3 seats so I have that weight reduction checked. I've said it before on here but buying those fake gt3 seats was the best 1,000 I've ever spent.