Help with choosing new rims

[ekvals]

Hi.

I was hoping someone could help me decide what kind of wheels i should go for.

I was hoping to get some 20" wheels. I've been looking at the staggered style with the combination of 275 and 315.

I've seen that this is oem for the 4.4 engine type, but my car is a 3.0l.

Is there different offset values between these cars.? Will wheels meant for the 4.4 stick further out on the 3.0.?

Are there other problems with installing these kinds of rims on the 3.0.?

Thanks in advaned..