Ok, please don't take this as the word from SCCA!
It appears that the Crawford AOS *may* be illegal for the Stock Class as it combines 2 systems into 1. There are 2 seperate hoses that normally connect to 2 different places on the intake. The Crawford AOS takes input from each of those 2 hoses and puts out 2 outputs. This is where the combination is believed to happen.
According to my buddy, this is not permitted. As STX inherits the stock class rules, if it is not permitted in stock, you can't do it in STX.
I'm thinking about writing a letter to the stock Advisory Council to see if they will make an explicit ruling on this. I'd appreciate any inputs anyone may have.
We should probably start a new thread for the discussion to help us organize our thoughts.
Anyone who is interested in helping, please PM me directly. I probably won't put any effort into this until next week.
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simpleisbest, I was directed to a thread on one of the local SCCA forums where you were asking about this unit. If you are still interested please contact me via PM.