fyi...Yes, the stock 08 spring bis a 10.0 while the 06-07 is a 8.7 if memory serves me. Linkage ratios are close enough that valving isn't a ton off when you drop spring rate for a light rider. Don't have the HS comp turned in very far at all. start at 3 turns out at most. We have re-valved Gen 3 shocks on the shelves for fitment to gen 1 and gen 2. A 145 pound rider with a stock gen3 shock/spring on a gen2 - Nope. Not a good setup. WAIT!!!! Unless you ride double a lot and your GF is substantial - then, it makes sense.
Opps! Yes, the 10.0 rear spring was gen 1 only. However, don't believe everyting you read on supplier web sites. Not one single fork spring out of any of the gen1,2,3 measured anything near 1.0. More like 9.25 to 9.5. That's why a swap to an Ohlins (or similar "PROPER" length) spring with a rate of 1.0 acts much stiffer.fyi...
Gen III stock rear spring rate is 9.1 designed for 145/150lb rider
front springs rate is 1.0 designed for 200lb+ rider