On a budget here and can't afford a 5yo truck like I'd really like to pull my big trailer. Looking at a '98 Dodge 3500, cummins diesel w/manual transmission. About 240,000 miles. Looks like it's been taken care of but it has a big exhaust pipe STICKING UP OUT OF THE BED BEHIND THE CAB! Is this some kinda jake brake thing or just a redneck exhaust pipe? Bad idea? How much would it cost to put a real exhaust pipe back in it and weld a plate into the bed to cover the hole? (Or should I just go find another one?) Also found a '98 Dodge 2500 4wd V10... has some rust but owner says it's in good mechanical shape, which would suit me just fine if true. The price on this truck is "much less" than the 3500. What's the deal with this engine? I know it was discontinued several years ago. What kinda gas mileage could I expect with and without my trailer? (Or should we say mile gassage, how many gallons to the mile?) Any known maintenance/reliability issues with the V10? Thanks!