I don't know exactly what the screws for the wheels are called, but I do know there are 5 of them for each wheel... I recently purchased new wheels for the SRT-6...

Stock ///// New Rims

18 x 7.5///// 18 x 7.5
35mm //// 29mm Offset

19 x 9 //// 19 x 9
22mm //// 37mm Offset

From this information I have gathered that I would need 20mm spacer for the rear for the rims to be pushed out 5mm in the rear and the front will be pushed out 6mm without spacers.. so my question is it apears that I will also need new "screws" what size would I need and where can I purchase them? any suggestions?