hey guys I have found a 95 f350 with the 7.3 that i am interested in buying and being that I am new to the diesel market I am not 100% on what to look at to ensure I am not buying junk. It has 330K miles on it. New injectors aprx. 20k miles ago, upgraded HPOP, turbo back exhaust and DP tuner with 5 tunes. guy says rear main leaks a little but everything runs and drives great. My understanding from reading is rear mains rarely leak on these. Any helpful insight or advice is appreciated