i just bought a 97 4cyl, 5spd with 122k miles on it that blue booked for $5200, for $4000 just for reference. $4500 for 68k miles is a pretty good deal. if the aftermarket iginition is the culprit and it blows fuses all the time, it probably wasn't installed correctly somewhere. it likely would be a simple fix. finding the problem may be another issue, but for $4500, you could buy it, fix it, and sell it for at least another $2000 on top of what you paid for it. or just keep it and enjoy a cheap jeep.