Nope, I haven't even installed the kit yet (or reassembled the engine). All I did was coat the pistons. I'll start at a 30 shot and work my way up. If I see any deto I'll start changing things, the first being octane. Honestly I think my sled will be competitive with only a 50 shot, if that isn't enough I'll start learning about building engines for nitrous the hard way.
I think your motor will do good as is up to a 50-60 shot..if ya need more..hit me up..I used to burn thru 14 pds in a 100 ft. run...I can offer info on what worked for us ..two strokes will be different but not by much....I think your sled will be competitive as well..but tim is right..johns sled is gonna be real hard to touch..a master built it and it shows....