This Tsukuda Hobby kit seems to be the "goldylocks" kit for this project. It's better than the 1/144 Airfix MiG-21s (which I only really use as cannon fodder to be blown up), but not good enough for a staring role like the Eduard ones.
As you can see from the sprues, there's enough detail for a MiG-21 to be in a strong supporting role in this project. It's good, but not so great that it'll outshine the RA-5C Vigilante.
All buttoned up... now for some putty. The the area where the cockpit connects to the rear fuselage on the RA-5C is a bit thin, so I added some plastic card to bring the joint up to the same level.
Canopy's fit... barely. They worked during the dry fit, but after glueing them in place they've rubbed some of the paint off the pilot helmets on the inside. Oh, well, nothing I can really do about it without a LOT of extra work.