a higher offset goes INTO the fender. the lower the offset the farther they will stock out.
With that being said, and not wanting the wheel to stick out to much I take it the 45 would not stick out ?
04+ are 52mm, so 35 would be too wide?, 45s are a little wider than stock?
2007 Pontiac Grand Prix GT Series III 3.8 Super Charged AL 104's Plugs, 180* T-Stat, Tuned PCM , Custom CAI is complete and installed, AeroForce Interceptor gauge, Smoothflow 3.5 pulley with 0* KR, SSAC SS Headers. 6000K HID