Welcome to the club!
I have a Leo Vince can and a de-cat system from spareshack. It's a 2-into-1, so not one on either side, but the link pipe looks pretty cool (it's all twisted) and has the effect f showing the single sided swing arm off!
(pic below)
Full price is about £530 for the can and £220 for the de-cat pipes I think. Although, I got the can for £400 brand new on ebay (Italian ebay has them even cheaper, about £350
) and the de-cat for £100 from someone on here.
Depends if you can wait for a bargain on here, or want to buy new...