Congrats! Beautiful amp!
It is at THIS POINT (as an Ampeg enthusiast) that I would strongly
Strongly
urge you to wait a moment and consider finding a similar vintage V4B. Please!
same wattage, and you'll end up happier with the selection of EQ frequencies, more tailored to bass. i have a great 1970 SVT and have been through my share of V4s and the other 100-watt amps trying for a slightly less monstrous alternative; Please consider trying to find a "B" amp.
If that doesn't interest you, I'd be happy to trade you straight across for my mint V4 (guitar) head of identical vintage, and you could get what you're looking for without having to do any surgery.
Either way, congrats!
(not my pic, but identical to this.)
