I may be impartial but I would keep the SRT6.
I would look at something else in your collection
to sell... I thought I read they built less than 1,000
SRT6 Roadsters. In 10 yrs, there can be some value
there. Looking at your list of vehicles. The SRT6 is
one of the best ALL around vehicles. Speed, torque
and handling. Unique styling. That is why you bought
it in the first place. My opinion!!