hey guys...i dont know the technical stuff about mufflers so i figured i would ask the conglomerate (is that how you spell it?)...

so the PV2 im currently running is starting to get on my nerves..i dont know if its just getting old (bought it used almost 3 years ago), or if having a noisy car just gets old

anyhow, i was looking to possibly upgrade this summer...
i LOVE the way the infinity FX45 sounds...so i thought to myself, maybe i can just get a FX45 muffler and have someone weld it on the VX...

questions-
1. is the back pressure going to be WAY off (either + or -), causing engine trouble...

2. is it going to sound remotely the same? different motors so i dont know what to expect.

thanks guys,
jack