I done one years ago and done it the hard way.
Was a fairly unique conversion back then (19yrs ago)

I used escort stuff for mine and had to make all my own mounts, do the chassis leg mod etc etc.
That stuff you can buy now from the likes of Fiesta Centre so the fitting is fairly straight forward.
Fiesta Turbo stuff fits much easier as you wont have to cut the front cross member.

If its a good shell then do it. They are a total hoot.
Make it something like a supersport rep.