hey Martin.
Agree, there is much to be learnt about the R35 suspension. I am no expert thats for sure. I am pretty sure however that Murray's experience can speak for itself, I don't need to defend his expertise as he is regarded as a leader in suspension setup in Australia I doubt his comments on JRZ were aimed at selling his own product.
You are right about the lack of testing, hence why my R35 will provide feedback and data to MCA and will help them make any adjustments required to the spring rates and/or shock valving, further refining the overall product. All of our on track testing will be conducted under the supervision of Mercury Motorsport, and dealing with local companies (MCA and Mercury) provides access to limitless combinations of shock setup and springs, along with personalized, on-track service.
I am a big fan of using local expertise and products, which is why we are seriously looking at using some of the Willall gear when we get round to my build a the end of the month.