I have a 4-2 exhaust, but not sure of the aplication. The mufflers are new. With some engineuity, you might be able to cut your OE pipes up, and make some type of collector and make it work on your bike. I live 3 hours north of you. if this is something that can wait until spring, you could make a road trip to my place3 and we could see if we can make it work.
I am sure we could figure something out.
Tom