[trularin]

Joe, I never use a spray on the header gaskets to the heads, but if you have iregularities in the surfaces at the side pipes, you might want to put just a little on to help keep the gases out of the engine bay.

The white gasket board from Mr. Gasket make great side pipe gaskets. It is what I use.

Just a quick note, you might want to gasket the flang to frame mounting as it will reduce the amount of noise in the cockpit.