| Jools,
I have dealt with Hyperpro and they are very helpful. Lent me a spring to try on the rear of my bike. No hassle at all. In the end, I didn't keep it, but it's really a case of getting the rate spot on (as Phil says) and it's a bit/lot more difficult to calculate/predict what spec or wire/wind will work with your combination of loaded weight and suspension design. With a linear wound spring it's a doddle to work out your requierd rate.
All the best as your plan to make it "your bike" is deffo the way to go.
Rgds,
Rob |