Live Axle Roll Cage Compatability

[HustleRussell]

I'm selling a live axle roll cage and I'm getting all kinds of enquiries about whether it'll fit a GBS, or a Westfield etc. Does anybody know how similar these cars are to a Caterham as I've never seen a chassis in the flesh, are they dimensionally accurate rip-offs or do they differ in chassis design / dimensions?

[Equus]

They differ in chassis design and dimensions.