OK, so I'm not sharpest pencil in the bunch. What does the initials NPP stand for in NPP mufflers. The best guess I could come up with is Northern Provinial Pipeline, LTD which sponsers NPPRacing.

Yep, Northern Provincial Pipelines series. I don't get up to E$dmonton much but did see one race in the series once. Fun, for sure, but not NASCAR.