[Healeys] Cavity paint.

[David Lodge]

Just about to throw myself into welding up the inner and outer sills on one side and it occurs to me that there should be something more substantial than a primer coating, especially on the inner surfaces (A couple of drain holes might not go amiss either, judging by the veritable avalanche of rust that came tumbling out of the deep end of the old one!).  Does anyone have any recommendations, as the selection appears to be truly mind-boggling - POR-15, RustBullet, and the stuff that Eastwood sells all spring to mind.  Thanks and greetings to all.