Dynomax Super Turbos

the tti systems don't hang low at all. they are about as close as you are going to get under the car. i too got the tti 2.5 x system on my 340. i got the manifold system with the super turbo dynomax mufflers. it is very nice sounding. cabin sound like cavemanmoron said is pretty loud up to about 35-40 mph, then it quiets down nicely.