What you appear to have bought is a pipe appropriate for the year 1993.
It appears from what I see on google, this pipe require a silicone tube joiner to join it to a header. Probably came with a header that has screw fittings as well?

Now every pipe has a round fitting and is held on by springs, and the header and pipe are mated together by rubber gasket internally and three springs externally. This is much better.

From what I saw on google Dynamite mach2 uses same fittings as any other engine on the market today. It's your pipe that is wrong.
I would not be too worried about Efra approval, LOL.

What you want is something like this:
http://www.amainhobbies.com/product_...oad-Tuned-Pipe
or this
http://www.amainhobbies.com/product_...ystem-Polished

It's cheap and it'll work. I don't think you need to worry too much about performance aspects, as this engine is basicly a budget item.