I think the company have got too much riding on the M3w now to be put off, and I rather suspect that they will want to go ahead in the present form, ie with the S&S engine and Mazda box, it shouldn't be too much trouble to make it lighter, maybe by using thinner and lighter chassis tubing and other bits and pieces, after all 50 -75kgs isn't the end of the world,....................is it? Maybe they should be speaking to Caterham Cars who have just progressed into an engineering consultancy. Actually, and in all seriousness, maybe I should send an email to Ansar Ali, the very go ahead MD of Caterham?