The Mirage is available here through a company called "Stuff We Like". Not sure about pricing, I got mine direct from Kamdax before SWL was involved. Tower won't be getting any more Kamdax stuff.
I have another mig NIB. I weighed the parts last night...if I am VERY careful, I can get 1-1 t-w. THAT would be fun!
Still wondering about why it will not come up on the pipe. Will have to investigate that further.
Also looking into getting a CS or other hot 06, piped, no throttle, and trying that. When I think about it, I don't really NEED a throttle.
Testing engines...yeah, SOME people like to get all greasy and have their ears ring, and even write about it, but personally, I can't STAND the process, I'll let suckers like YOU wear earplugs and wave tachs, I'll be busy building!