The Dispatch | Expert | Scudo Hub

Hi all it looks like I might have a good doner for a campervan conversion in the form of an ex taxi that has been very well maintained and has had an engine change 12 months ago with documentation to prove.
I'm thinking ideal because of the windows are already in, the rear seats have been removed. Not sure if there's a rear heater of some sort? I would put a small side kitchen in it and a 3/4 rock and roll bed. I have a CNC business and make campervan kitchens for all kinds of vans (if anyone is interested??). Also an ex mechanic so not much I can't do regarding work.
Just wondering if anyone else has converted a taxi and could give me some tips.

Would I need to change the logbook for taxation class purposes? Its got M1 usage 186g  km co2 emissions does that mean a higher tax bracket of £315 per year? I'm not sure but it'll be sorn when not in use anyway. Thanks all. As always any and all help gratefully recieved