The older ones did have totally forged engines, but that made them no better in fact the gen 3's are the best one out there. Go take a 96 GTS around willow springs for an afternoon. You WILL blow at least one head gasket. The newer the better if you ask me, and as far as an 06 for high 30s??? Nope that aint happnin. I just bid an 06 Coupe up to 45k today at Oralndo dealers Auto Auction. If its that cheap its shilled ebay deal or a unmet reserve, or something bad. The older 99-backs are in the 30's, as are the 03 SRT-10s, which would BY FREAKING FAR be my pick, they are SOOO much faster and the body construction is 1000 times better period no can argue, and if you do its because thats what you own. Ive had a ton O' Vipers and Im teling you how it is. Dont buy one for inventment either, sorry about the ol-lady excuse, but they arent going up I freaking promise you. My advice?, go with a mid-high 30's price range and it should'nt drop very much if you dont put a ton of miles on it. Go for an 03 if possible.