Except--making a 130a out of a D130 to reproduce recorded music--that would be a problem because fidelity would be compromised, but going the other way, i.e. coning a 130a frame with a D130 kit to play your guitar through, if you like the way it sounds, I don't see where there's a problem. But don't wreck a good 130a to do it.
Anyway, I have a 2135 for sale. The model number designates the same speaker (D130) in the late seventies Pro Division of JBL. If you are interested, pm me. I'm working on a price.
http://www.lansingheritage.org/html/...-comp/2135.htm
David