So, since my GT Pantera AL is 22" from centre of BB to top of seat tube it must be of size XL.
Thanks, I've had it for 12 years now but I have never known if it's a L och XL.
Since you had your Pantera AL stripped down to almost nothing, did you by any chance put the frame on a scale?
I want to know the weight of the frame and google hasn't helped me yet... and I don't have the knowledge to remove the BB and headset.