I'm commuting about 300 miles per week and traveling some additional miles with my job. Fuel economy is my chief concern. I'd like to sell my '95 Ford Ranger (83K miles) and find a '97 Jetta TDI without having to pay out any more $....An even trade so to speak. Is this do-able? If so, what type Jetta should I look for - mileage and trim-wise. I seem to have trouble finding any TDI's out there. I see many Jettas, but few TDI's. Any advice is appreciated.