Hello daly !
Which part in NY you live ?
I live in queens,if you want we can catch up any weekend.
In regards of your muffler i'll give you an straight answer: Dynomax
The dynomax super turbo series is a excelent choice.I got two of those under my horse.
They are very quiet yet has nice rumble & sweet tone.
In regards of the cladding I use "back to black"
I like it because it doesn't shine yet provides an excelent black looking coat over the plastic.