What are the factors that make a .15 engine legal for SSC? I have: (1) Enya .15 III with an OS band-attachment-style muffler adapted to it...don't know where the original muffler went. Also have (2) MVVS .15's with the MVVS muffler - kinda like a mousse can style, but came stock with the engines. Also an RJL Conquest .15 with the stock Conquest muffler and an ASP .15 with the stock ASP muffler. Which of these are legal for SSC? Please let me know before I waste a perfectly good WalMart cutting board!

Thanks,

Al