These mounts allow you to mount your rb20, rb25 or rb26 into your 1969 to 1978 Datsun 240z, 260z or 280z. These mounts utilize poly bushings, DOM tubing, tig welded and are more than robust for your cars needs. They are a direct bolt in with your factory crossmember with the exception of having to drill out the factory mount hole on the crossmember to except a 10mm bolt instead of the factory 8mm bolt. They also place the engine as low and as far back as you can get the engine without any major mods and also set the engine at the correct angle.
Right now we aren't 100% sure if these will work with the 280zx, but we are working to see if they will work.
These do clear rb26 twins also.
lead time on these is about 2-3weeks as they are made to order.