What is a fair price these days for a 2001 Dodge Ram 3500 4x4 Sport, Black, Leather interior, Cummins Turbo Diesel, Automatic Transmission, New tires, existing engine warranty since it has a cummins recon engine w/ under 35,000 miles on it, 3.55:1 gear ratio, in good condition with 113,000 miles? Reason for asking this question is that a local guy wants to trade me a 1991 W-250 Reg. Cab, Non-IC, Cummins Turbo Diesel, Automatic Transmission, that has 165,000 miles and is in above average condition AND also a 1995 Dodge Ram 2500 ext. cab, long bed, automatic transmission, 4x4 w/ 210000 miles in fair condition and it needs a transmission, which comes with the truck, installed. Thanks.