GMC 2006 Superbann without double

GMC 2006 mileage 467 thousand Large engine 700 Superbann 8 cylinders Engine and transmission in good muscular condition I want it clean, according to the owner I bought it from The GMC is very good with some notes 1- The air conditioner fan must be replaced, although before it broke down the AC was freezing cold 2- Weak alternator 3- Gearbox oil leakage There are other notes such as interior fabrics, supports, leather, wipers, etc., but I have already bought all original parts, meaning you just need to take it to a workshop for installation Except for the joints, I bought second-hand American ones because I couldn't afford the originals; however, the joints aren't damaged, I just wanted to overhaul it. Also, possibly the gearbox coupling might need replacement Tires are almost new, The temperature stays at quarter mark, rarely exceeds quarter, The interior has some minor issues