It will work with you mufflers, also we have Item #10396 Hi Temp External Coating used by NASCAR.

As long as it is clear it can be used until empty.

I'm not sure of the SQ ft coverage per can for you application. Eastwood High Temp Internal Exhaust Coating reduces under hood temperatures and extends the life of exhaust system components Thermal coating withstands up to 1800 degrees F 2 foot long, 360-degree aerosol extension nozzle for easy application Works with both new and used exhaust system components Use our exclusive formula to coat the inside of exhaust system components to trap the heat inside the tubing, thereby lowering under hood and under car temperatures. Great for headers, exhaust manifolds and more! Eastwood's High Temperature Internal Exhaust Coating is formulated with specialized ceramic components and a tightly controlled particle sized aluminum pigment blend. Once parts are coated and exposed to high exhaust temperatures, the coating converts to a hard, tough, and impermeable ceramic barrier that protects and enhances the function of the system. The coating creates a smoother internal surface that reduces gas friction and creates a generally consistent gas flow through the system. Since the coating is designed to conduct less heat than the uncoated steel components, the coating reduces the heat transfer and heat buildup at the coating surface and decreases heat buildup and hot spots. Its 1800° thermal coating properties will extend the life exhaust system components by preventing rust and corrosion build up from the inside out and the Eastwood exclusive 2 foot long 360° aerosol extension nozzle makes applying the coating a snap. Works with both new and used exhaust system. "The headers came out great. Very even and smooth coating. Dried super nice. I am very happy with it.” - Mike Phillips – Phillips Hot Rod & Customs

I would remove the O2 sensor as not to clog it

Helps keep the heat coming off the pipes down, helps the pipes resist bluing and discoloration over time/heat cycles and seems to help keep both bikes running a bit cooler with less heat soak getting over to the engines. It helps resist bluing, over time areas that weren't totally coated may show some discoloration.

I can per set of long headers has been reported to work well.

This can be topped with our Hi-temp coating as long as it is sanded if fully cured.

Thanks for the reply Kelly, any recommendations on a product to use?