RE: Wolf Predator
yes, I believe it is built around the 30cc Homelite jug (shaved down) with a nicely machined case and innerds... I took mine apart to see how it was internally but never ran it (I bought one but traded it for something bigger before I ever ran it, about 3 or 4 years ago).
There was a review in MAN I believe back a few years... or it could have been FM or RCM too, I cant remember exactly.
AJC