I have a rear exhaust RO-Jett 76 with very little run time on it for sale. Price is $350.00 plus shipping (unless you're in Southern California and we can meet somewhere). If you'd like a pipe, I can add that to the order for $50.00. I don't have a header available for sale.
If interested, please call me at 760-271-2743
Regards,
Dave Sabon
San Diego County CA