Casstrho

I want to purchase rims for my 97 V6. I was wondering if the lug pattern is the same for 4cyl and v6's. Basically will the rims that fit on a 4cyl fit my V6. Second what is the biggest rim i can fit on my car? I know a lot of people have 17's and i have heard that over all that is the best size (because i live in Boston and the roads suck) but i will be moving to VA where the streets are some what better. I would like 18's any suggestions? (Good pricing would be nice too) also i wanted to lower my car some and was wondering what would be a good spring kit to purchase to do so. Finally I wanted to know what other lip kits beside the W-type exist for the 5th gen V6? thank you