It's 1/24. The kit is a fairly basic curbside model. The wire wheels are sold separately, but are a lot better than the stock steel wheels that come with the kit. Oddly enough, the wheels were the easiest part of the kit to build. There was a lot of sanding, cutting, and shaping of the various white metal parts involved in putting the model together. I primed it with Alclad gray primer and used automotive paint for the British Racing Green paint. My first coat was with a rattle can, and that went horribly--I got runs and bubbles in the paint and many hard-to-reach areas were still devoid of paint. I then decanted the paint and used a mini spray gun (an Iwata LPH-50) and that was a far better experience. Many of the chrome details you see are polished white metal parts--I think I used of a box of sanding sticks on this project.
I would have liked to detail the interior some more, but ran out of time. As it is, I made the side pockets from lead foil. I also got the MG logos from leftover decals and photoetch from a Fujimi MGB kit. The headlight lenses came from a Monogram MG TC kit--they were a near-perfect match and looked far better than the flat plastic disks the kit came with.