Okay, time to clarify. I bought the engine because the owner didnt wanted to buy another head(The old protec head was milled by a idiot that took to much off the head) so I got it "pretty cheap". I bought a Adahead and measured it before I got it milled out to the specs I read here on this forum. I tried it once on the lake before that ugly big protec-exhaust started to get loose.
BUT I didnt knew more than that it was a dasa engine and probably the fastest engine I could get my hand on with the money he wanted for it, so I took it. Still, I didnt know what kind of stroker it was.