Indeed, K-Tech are not big fans of fitting wrong bits to bikes, they won't uprate the spring on an RS250 (Aprilia) shock to fit the to RVF400 either (a popular "upgrade" amongst 400 owners) nor would they put a heavier spring on my NSR rear shock.
Now I'm no suspension guru so when the guys who do (at least) 1/2 the bikes on the BSB grid tell me something, I listen.
_________________
Please do not PM me technical questions, if you can't find it on the Forum start a thread