I intend to run an engine next year that would fit into this years class 5. i shall be competing in the both the Longton and Liverpool championships which will require 1B tyres. what makes the Lotus 7 championship viable for me is the number of aligned events, typically Aintree, Harewood, Loton, Anglesey etc. If class 5 becomes mod prod (ie out of step with the rest of the country), then the L7 championship may be a non starter for me. Nobody has produced any evidence that supports the supposed danger of 1B tyres on class 5 cars. I don't believe that our club is big enough to support classes that don't align with the rest of the country. Clearly this is a personal view from my own perspective, however I think others will be affected in a similar way if Class 5 goes mod prod.