Indeed it was, although the Young brothers (David in particular) gave Kevin some input on how/where/what to beef up to make it more suitable for HiFi use. I think I bought the original pair but they went straight to Nottingham as Kevin had the space for them.
Vitavox’s tame cabinet maker built the first few sets of cabs & did a nice job.
If I recall it was someone called Bill Webb who’d have been near the Vitavox factory in Harrow. This was 1992 so he’d be late 80’s or 90’s now if still going.
Not sure how much change you would get out of that after buying drivers, making cabinets, horn profiles, making crossovers etc.
If they were manufactured commercially now they would probably be >£30K