It's not an uncommon set of mods anyway, so you may well find one. I think the Owners Club has a couple available. If not, they can sort you one easy as!
So avoid the models that have 300,000 clocked... and there are a few.
50k is barely broken in for these things.
£1200 will buy you a pristine 3CV model (as in, there is one for sale right now) with touring screen, hot grips, Hagon shock, custom seat, engine bars, fancy exhaust, luggage rack, Scottoiler and all the trimmings.
My own tatty, beat-up Battle Bitch cost me £950 and was professionally valued at £1800, FFS!!
These things DO hold their value, parts are cheap and plentiful, they're a dream to work on, cost very little to run (even I can afford it) and if you don't stop flapping and just get one, I'mma kill you in the face!!