Hi and Welcome
Stupid questions are very welcome, as it's stupid not asking questions
Mine is almost finished now so myself and Matt would be up for a meet
The mk2 turbo 18mm rear bar fits with using the front ARB brackets from the mk1 (hard to find in good nick, expensive to buy from Toyota, I had mine made).
I purchased some mk3/mk4 fiesta drop links to replace my old ones as they were knackered anyway. I don't think the standard drop links will fit the mk2 roll bar.
If yours is a late mk1a, I can't remember if the mk1a's had a rear bar, so if yours hasn't, you'll have to retro fit the rear bar but drilling and tapping some holes.