Here is a link that all new (or potential) owners should read:
https://www.crossfireforum.org/forum...w-members.html
The most common problem with the SRT-6 is the Intercooler Pump fails and will cause the supercharger to work intermittently. This is not a hard fix and can be done fairly inexpensively if you are not afraid to wrench on your own car. There is a thread on replacing the pump. If you can get the S/C to act up while test driving it, you might be able to save some money on the asking price.
Seat heaters are another common problem - more than likely, they won't work. I've never had a need for them since the car warms up rather quickly, but again, it can be used as a bargaining chip.
Top, right side of the indicator lights is a light that looks like an oil can - you will see it when you turn the car to on, prior to starting the car. If you can drive the car at night, you might see this indicator light dimly glowing. Most likely, there is not a problem - the sensor in the oil pan area may be faulty. I've driven mine for 3+ years like this with no adverse affects - it might be worth a few bucks off the price.
If you can, post the add here and the members can take a look and give you advice from there.
Good luck!!
RL