And the answer to the wheel question is

jawbone said

The 15X7 has the 4.0 in. BS; 15X6 3.3 BS. What point is critical that your trying to clear?

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fender lip-- upper and front corner.

you don't need to worry about anything suspension wise till you're at about 4.75 BS with 15 or 16's, then you're into the arms/ball joints and tie rods. at 17" you're able to clear those.