You might want to review
this thread.
If you have a commercial license and significant current experience on turboprops, then you likely have the basic aptitude and your chances of flying warbirds are reasonably good. The other required elements in the equation are:
(1) money (unfortunately, it is a
sine qua non);
(2) time (not just for training, but to muck in and help out around the airfield, as required);
(3) enthusiasm (not really difficult to muster, since we're talking about flying some great machines, and you'll be dealing with some wonderful people); and
(4) aircraft availability.
The first three are competely within your control. The fourth is a bit more tricky, but opportunities are out there; you just have to keep your eyes and ears open, and be friendly without being pushy.
This thread might may be helpful, and see also
here.
I hope that this helps!
