how much you willing to pay? 
check out these beauties on benji site., bottom of the page...
http://www.benjiescaferacer.com/exhaust.html
My story about BCR exhaust, which appears elsewhere on this board as part of larger thread:
Exhaust:
This is probably the quintessential BCR and disappointing experience: beautiful looking pieces that will be fabulous on my bike . . . once I finally am able to get them to fit.
Again, I had constantly told Benji my bike was a 73 but they exhaust design they use fits a later model manifold.
Thankfully, we have a good Japanese bike salvage yard and I was able to find the correct pieces, but it took three hours of driving, scrounging, haggling and wire wheeling to get them and into nice shape.
The headers and mufflers all arrived labelled 1 through 4 so this would seem to translate into a relatively straightforward install. I mount headers labelled 1-4 in exhaust ports and it looks like an octopus; pipes point in every direction but rearward. Ok, maybe my 1, 2, 3, 4 is really their 4, 3, 2, 1, so I reverse the order of the headers and again it looks like a clusteru#$%* of tubing.
Benji has sent me pictures of the pipes mocked up and they look fine, so I decide to work backwards. It’s easy to figure out which muffler goes where so I’ll just match the header to the muffler. The mufflers mount to the passenger peg holes but they ship with a bolt far to short to even fit through the mount holes. I quickly discover that this is not just a metric bolt but a very specific automotive fastener that no major auto parts store locally carries. Three hours on the phone I find some hole in the wall shop that has some but I need to buy 100 of them in order to get two.
I mount the right side pipes and find two headers that match. Now I proceed with the left side, but there is no way they’re going to work. To make a long story short, my pipes were fabricated on cb750 frame that had a custom mounted and relocated kickstand, whereas mine was in the stock location. Number 4 pipe was not going to clear at all.
BCR:
Stock:
Benji asked for all sorts of pictures to try and figure out the problem and couldn't see or acknowledge that his from was different than mine. He did offer to fix or replace the pipe in question, but if you look at where everything lines up, a new pipe 4 means a new pipe 3 and since the whole setup is meant to be be symmetrical, it would mean new pipes on the right side:
And the real question is how many more months must I wait to get things going on this bike build?
Despite his insistence to the contrary, the only solution was to relocate the kickstand in order for pipe 4 to clear the frame. So I cut off the kick stand and now my exhaust fits.Since I also lost my center stand, my bike is now marooned on the lift until I get my new weld on stand (it’s in the mail). The old stand is simply too short and won’t fit along the bottom rail in concert with the exhaust.
I am happy to report I found a really trick kickstand that will look great and flow with the lines of the exhaust, but $165 and three weeks later, this seems to be a Mantra for this bike.
