Well, when I spend the kind of dough you're talking about, on an R/C job, I go for a kit rather than a pre-fab. If you've had a lot of flight and building experience you could pull off the mod you're talking about, but if you prefer not building from plans... Well, I'd avoid it.
Royal *used* to have two Bf110's available. I've looked all over the web and can't find a hint of one, anymore. Bob Pfeiffer of Puyallup, WA. (heads up Yeager), used to have one on his shelf, but I checked the directory and he's no longer listed (probably retired).
I still get around the U.S. pretty good, so I'll keep my eyes open (a little self-interested anyway), but probably plans are the way to go.
Build on your experience level and eventually you'll have a dream machine. Those 'cash-cows' are the real head-turners, and I know you want one!

I've moved back into Heli's these days. Our local field is grass, so my favorite planes (read P51D) won't hack even soft landings without losing retracts. My Heli don't care!

Maintenance on this beast is running about $300/mo. (even without augers), so Heli's are not for the feint-hearted. Uh, bear in mind, though, that I fly a LOT!
Good luck, mate!