Don - if your's isn't already drilled are you sure that it can be ? It may be like my 122 engine that doesn't have any "meat" there to drill into. As for who has them ... I've never seen any on a single but they may be the same as the bolt on exhaust flange on the old twin Kohlers ... and I'm not walking up beside the shop and uncovering the one on my HA Payloader to look ... because I'm not walking today , I'm limping and screaming dragging my right leg SO take what ya can and run with it.
but I'd make my own IF it were me doing it
but I'd make my own IF it were me doing it