I have no idea what the track or dyno improvement would be on these as we have not tested them. You will most likely see little to no improvement on a dyno, but a noticable improvement on the track. Reason being is the design is optimized for air flow, so the faster you go the better they work.

From looking at the design I'd estimate power equal to a CAI for the N/A and on the SRT you'd be looking at 5-8 HP less then CAI. When added to the SL55 setup it's probably equal.

The tubes are OEM MB parts and the stock tube needs to shortened to fit.

Retail price is $78.00 for the pair I believe, plus the cost of new intake tubes if you do not want to modify your own. We get a discount on Chrysler and MB parts, so I have no problem and putting some sets together and selling at cost + paypal and shipping.

Figure around $100.00 shipped, but I'll double check tomorrow for the exact prices.

These tubes mixed with KN filters, and a gutted air box is the best flow you can get pre-MAF.