Thanks for the help, Dan. My anxiety to keep the car original has nothing to do with adenoid ridden men at Car Shows, and everything to do with my own personal feelings and interests. There’s a NOS VV on eBay atm for £100 and I am giving it serious consideration.
As I am that 3 door Sierra!
In theory, if you get either your VV or that nos one and look after it and keep it clean it should be perfectly ok.
The VV off my Transit was actually pretty good during driving but it sometimes at idle would be a bit up and down. I like the Weber kits tbh so decided to do that instead of rebuilding the old VV.
If you want it you can have my Transits VV?
It's an 84 with an auto choke, the great think about it is that it's not even covered 20k miles from new so a good clean up should be all it needs.
It's wrapped up in a box at the moment, I keep stuff like that but realistically I'll never reuse it again so if you want it you can have it... up to you.