i know this has been asked a few million times.. but i dont have much time .. going to look at a 97 model with the locking diffs.. lx450.. around 154k miles.. and he wants 6750.00 firm for it.. says it is in excellant mechanical shape and exterior and interior are nice as well.. but he has only had it for about 3 months .. but bought it from a guy he knew very well and has owned since 2000.. but no paper work .. except for the brakes he just had totally redone.. said he bought for the wife.. but her jobed changed and required her to drive almost 100 miles a day.. so a quick check list.. what too look for motor wise? prone to over heating? testing the locking diffs? and the tranny? maybe a quick run down or check list would be nice