when I bought my '04 1M/KC the previous owner had mounted an FMF Titanium bike can on it. he had to weld a top ring to seat the pipe but it was pretty simple, worked well and sounded pretty bad ***.
I did eventually replace it with aSpeedWerx can, to match the pipe. Would have probably been fine... but I didn't want to split it and replace the fiberglass pack ever yr. That was about the most I could find for using that can on a sled that size.