I've just seen a thread on another forum discussing new regulations that may be introduced. Although I don't post here much, I think that it's important that every car forum is aware of the new proposals.
The most interesting part is that "The DVLA could decide that an owner who cuts into a Ford Escorts Transmission Tunnel to fit a five speed gearbox has modified the monocoque. Similarly working on a mini?s bulkhead to fit a Weber carburettor or adding a larger engine could count as a modification." While the MX5 can't be pre '73, it might have some impact on what can be done, including FI.
Obviously I don't know what will happen, but the more people who are aware of this, the greater the opposition to it will be.
I thought about delaying making this thread until tomorrow morning, but that might have been cruel.