Good luck finding those old grey tolex or the late 60's through 70's Traynors.
My bass player uses a '64 Traynor Bass Master head that be bought last year. It has had the mains cable replaced, but that's it; otherwise it's stock. (Maybe it's been recapped) Not too hard to find, but definitely not what I would call inexpensive ...
Why don't you take your little Cobra Kais and get outta here?!