I've got a set, but I haven't mounted them yet -- so I can't offer much in terms of how they actually fit. I can tell you that it was a major PITA ordering from them, with lengthy delays, weeks of lying about when they would be ready and ship (they are notorious for creating a packing label so you think they're on their way, but tracking shows nothing gets shipped for weeks or months) and errors in abundance (I ordered silencers and they sent me headers, but I had to pay customs on the price of the silencers. They eventually sent me the silencers, and I had to pay the high customs fee again, negating any "bonus" that they thought I had by getting a "free" set of headers). I also ordered the clamps and the rubber grommet, but then they told me they were included with the silencers, but when they finally came -- they weren't included. They look nice, the chrome is decent, but they aren't perfect -- there are a couple mild cosmetic issues and the silencers weren't packed very well or carefully -- perhaps out of frustration since they screwed up the first time.
There is a very long thread on Busso on this site, mostly with folks who have ordered 750 pipes including a group buy. Many are still waiting, nobody has anything really great to say about their service, and some have had issues with fitment.
With all that taken into consideration, it's up to you. Maybe someone else can chime in about fitment to add something positive (I hope...). There aren't a lot of options for the 350F, but if you are going to fix your original pipes and then remount them, and the other set is a temporary fix, there are 4-1 options that are much cheaper, with companies that have much better reputations, like Delkevic. 400F pipes work too, but you've got to switch over the pegs, brake lever, and shift linkage (and kick starter).
Best of luck.
