After the engine swap of the blown 250 motor to a 450, I find myself wondering about exhausts. I see that the part numbers for the 250 and 450 are different for the silencer and mid pipe, but I don't know the exact differences. I'm assuming pipe diameter, since the splitter is also different. I've tried looking all over the place, and I can't find a stock 450 mid pipe and silencer, and a full system is $900+ which is obviously out of my budget by $600+. Any ideas what I can do here? I'm guessing that with the right jetting, I'm guessing the bike will run, but just be choked up. I haven't tried it yet to be honest. I'm just getting to where everything is swapped over. Just preparing for the next step.