Samy, I have 4 different sets of 18x9, 18x10, and 19x10.5 wheels with +20 to +50 offsets down here in Escondido if you want to try them before you buy. I can fit the 18x10 with a 285 on the rear of my Valiant if you get the offset perfect. Springs do not need to be re-located. I bought all my wheels thru Americanmuscle.com for $75-$99 each on sale, so don't think this Craigslist deal is the only cost effective way.