American Thunder Cat-Back got some ???'s

[04DarkShadowGT]

I paid $130 installed for my 40's mufflers and 115 for 3.5" MRT rolled tips so for 245 I have the looks and sound I wanted while saving $100 or so. Eventually I want to get spintech side exhaust so this is just to tide me over, then I can sell the tips and recoup some of the $$.