i`ve been in the market for a used ranger, found a 99 1 owner extended cab 4x4 loaded 4.0 auto. 71k on it, at a great price. trucks like new. owner has all receipts from all maintenance. all miles are highway. i dont know much about the 4.0 motor good or bad?? also not sure i want to take on a high mileage vehicle, but i like a bargain, and i only drive about 5k a yr. thoughts please?? should i go for it?