This would be my first diesel truck so i dont know much about them....yet haha. I wanted to know if yall think it would be worth it. its a 1996 2500 auto extended cab long bed 4x4. it has 174,000 on the odometer. its original owner since 96 and everythings original. ac works good and new interior. the guys asking 7000 for her but i know i can talk him down. im going to be doing alot of driving with it (not towing). do yall think it will be a wise purchase?? thanks!