I haven't been able to find out if there is a 14" rim rear disc brake conversion for a '78 280Z. It seems like all of the kits are for 15" rims or bigger.

I'd like to keep the awful-but-stock hubcap setup I have now, but not sure if it's possible. Anyone know? Thanks!

Carefully consider your reasons for wanting rear disks. If you're keeping your stock wheels and hub caps, it can't be for appearance reasons. Properly set up rear drums with modern friction materials are all you need for street driven Z. Concentrate on upgrading the front brakes first, but again, like-new condition fronts with great pads are ALL you need for the street. Yes, really. Make sure your master is up to snuff, fresh fluid, and a proper bleed.

Make darn sure you keep the front / rear relationship safe. Last thing you want is more rear than front. Do some more research and be honest with yourself about why you want disks in the rear.

Edited June 9, 201410 yr by zKars

I want them for the simplification and to actually do the work (this is just a project car and learning experience, no plans of racing/daily driving/etc.). But I can see what you're saying and appreciate the advice.

I was considering a rear disc conversion on my 72 because of week parking brakes, but installed new rear shoes instead. I'm very happy with the result.

Either of the 280ZX rear disc setups work. I had the early caliper setup on my Z. It was way too weak for the Toy front calipers, but it will actually fit under a 13" rim. I believe the later 280ZX disc also fits 13's, not positive. I'm sure there are other options.