if you are still looking for one, lmk... i can get one for you at the auction and save you some money. i would stay away from 04s though as they have vsc that cannot be turned off. well it can be turned off, but at the expense of losing your abs. they are tied together by a relay. if you disconnect the relay, you get rid of vsc/abs.

other than that, what type of issues are you worried about? its a lexus.... and if treated right will last a very long time with minimal maintenance.