I think you CANNOT get a Shaker R/T without STP, so no need to list it specifically. Contact Hal H. on here. He will be able to answer your question correctly.
Agreed. Just slide under there and look, if you see Yellow Blistens, you have STP. If you don't see yellow, you got a problem.I agree, look and see if you have the yellow bilstein shocks, my Blacktop does with STP and mine sits much lower than my coworkers non stp challenger
I'm seeing slightly better gas mileage than my last STP 6 Speed.You are absolutely right on that one. The ride on the 'Shaker' is different than on the non 'Shaker RT's.....The stance is lower by about an inch. I compared it to my other 2010 RT and my brother in laws TA appearance group 2010 RT. He has the 20 inch wheels as well. I would think that the suspension geometry is different on the 'Shaker cars. The shifting points on my ' Shaker is different as well. First gear hangs in longer and there is a lot more exhaust noise. Sounds great.. Don't have a lot of time to drive this gem. I wonder what the difference in weight is compared to the standard RT?......Such a cool car....