I am looking at a trx 450r that I am interested in buying. He's asking for $1600 for it and says he has lots of after market parts ( It has a full Yoshi exhaust, hot cam, new top end, nerf bars, true bead locks, Elka front suspension, pro taper bars, hand gaurds), but I don't want to be dumping a ton of money into this. The owner claims that the only problem is that the lower end needs to be rebuilt. He says it would only cost $450, but that seems a little lower than I thought it would cost. I'm not mechanically savvy so I would need to send it to a shop for the rebuild. How much would it cost, including labor, for a lower end rebuild? Am I wasting my time with this offer or should I put the money into the rebuild?