I've got a OOF drag pipe made by RDZ for a 250 hybrid, might fit a zilla I'm not sure.
It was a one-off development and I never got around to testing it.
JGILBO from the old site helped me get them to manufacture one, since at that time Q was in the middle of another sabbatical or whatever you want to call it and nobody was building good hybrid pipes.
The stinger was designed to be used at this length without a silencer, but could be shortened and a silencer fitted on, I can't remember exactly how that went actually.
Might be a killer pipe or it could be mediocre, who knows..thought I'd add it to the list.
It's bare steel and keeping it oiled and inside on a shelf still didn't stop surface rust from forming.
Maybe it needs ceramic coating or chromed, I dunno.
If anyone is planning on doing some dyno pipe comparisons and want to try it out, send me your address and I'll ship it out (to test, not to keep

)
Here it is next to a Q hybrid: