Have had AED 850 double pumper, Demon 850 double pumper on it, and has out of the box Quick fuel vacuum 850 on it now. The best the car ever ran as to not having a bog was when I first bought the car. It had the AED, MP electronic ditributor with chrome box and was set at 22 degrees total timimg. It ran 12.80 @ 111 mph with drag radials. Once I put timimg to 33 degrees the problem started. With the bog it runs 8.50's in the 1/8th. Have not put timing back to 22 degrees as 2 wrongs do not make a right? This motor is unmodified and was installed new from Mopar when the car was built in March of '06. The motor came from Bill Luke Chrysler in AZ. Part # is P5249666-AC Crate Engine 55310000 at a cost of $18,600. It has original hemi style exhaust manifolds with TTI 2.5" exhaust. The current ignition is MSD6-AL with out of the box MSD billet mechanical advance distributor. On the street the motor runs fine. The problem starts when a heavy load is placed on the motor. The trasition from idle to full throttle is where the problem shows up. Springs are stock with pinion snubber and traction is not a problem with 10" slicks. Love your car!