soooo i was gonna get some new rims after christmas.... but i found somewhere to finance them... so im gonna go ahead and get them... i wasssss lookin at 18's then some sweet 20's caught my eye... my future mods include full 3.4 setup... how much performance would i lose if i went with 20's instead of 18's..... before anyone screams tranny problems... im getting a TEP trans with my tax refund this comin year.