I've been using stock pipes on my 350, but I purchased some pipes from JC Whitney that were universal and looked pretty close to originals. They came in as two different styles. I actually preferred the wrong one better. So I went in search of a match that JC Whitney didn't officially carry. I put them on my CB77 and have that one mismatch still. I recently ordered a Mac 2 into 1. It's sold in black or chrome, but they are a little hard to come buy. Mac said they only had one in chrome on the shelf. I expect the fit and performance to be maybe decent, but for the price it seems like a good choice for me.
Yesterday a 2 into 1 sold for $300 new with chipped chrome and shelf rash. It looked like a kirker. There was a Basani 2 into 1 whcih sold about a month ago for over $600. The quality on these looked much higher thann the Mac.