Originally Posted by
Chris Peralta
I do know that I had someone stick an OS plug in one of my engines right before a qual started because I did not have any plugs in my pit bag. That button to this day will leak around the plug no matter how tight the plug is. To me they look different enough that I will stick with what is made for it.

Ok, the height of the taper is different, but how does that affect anything? As long as the angle is the same it's should fine.
For me it's the only plug i am ever going to use cause it's the only plug out of RB, OS, and OD plugs that my LHS has.