So I used Metal Rescue.
I think it was five 14oz bottles each mixed with 1 gallon of water. I reused on two other tanks. Mixture was a little weak on the third, but worked really well on the first two.
Exhaust is Coffman's-sound really good.

 

Cheers Chris, I do like that pipe, very neat.

 

Welcome and love the pics!

I have the Coffman shortie as well and think it has a nice sound. I did try it without the baffle but it was a bit too loud for my taste... and likely the neighborhood's as well!

 

Did the same.
I agree it was a little loud and read alot of posts on here that didn't recommend it.