I put a set of fishtail pipes on mine. At first I ran straight pipes with no baffle but it was too loud. I put in some 4 inch baffles and it sounds great. I used 1- 13/16" pipes and had to expand them just a little to make them fit. Looks great too and only cost about $300 including hangers and clamps. Those Agostini's cost at least $1000 and they still look like mufflers.
I wanted a late model 1100 Cali as this was too big and Harley looking . But this came up cheap and thought I could sell it if not liked. ... not being sold.