I'm from Harrodsburg, Ky and am new to the site....... I'm looking at buyin a RegCab 4x4 Auto 01 2500 6.0 Chevy Silverado. I have a few question for the "experts'' on here....

1) Is getting 15+ mpg out of the 6.0 out of the question???

2) If possible what do I need to do to get it???

3) The truck I'm looking at has 70k and is $10,500 and in good not great shape, is it worth it???

4) What problems do I need to look for other than the normal things, anything truck/drivetrain related that us prone to problems on this truck???

5) What rear-end do I want 3.73 or 4.10's I'm planning on puttin 285's (tires) on what ever I buy, I'm not as worried about power as I am mpg???