I agree. Winnebago has every year brochure which includes the specs you seek. Last I tried navigating through their website, it was a bit tricky, but your answer does lie there.
One point to add here "Might" apply to Winnebagos as it does with most RV manufactures. They will use up previous model year chassis on current year rigs because the release dates of the chassis runs behind the release dates of the RV model year by as much as 5 months. Assuming this is Winnebago's practice, you can find a 2009 View built on a 2008 Sprinter chassis, a 2008 View built on a 2007 Sprinter chassis and so on. In very rare instances, you could even find a 2 year old chassis behind the model year of the motor home. This occurred most during the recent recession with excess chassis waiting for sales to pick up. Some companies went out of business in 2009/2010 with others buying up those excess chassis at auctions at cut-rate prices, the savings used to survive through the recession.
There are some 2010 Phoenix Cruiser 2350s and 2400s built on 2008 Sprinter chassis which were bought at auction. PC-USA kept sales flowing during the recession in-part by offering the Sprinters at the same price as the E350, a creative strategy to survive during a very trying time in the RV industry. Sales of those rigs were popular for it saved consumers ~$14,000. Under similar circumstances with adjusted savings, PC-USA also offered the E350 chassis with the V8 engine for their smallest model 2100. When the word got out, orders increased back to a good level. Both the company and the customers were winners. I commend the owner of PC-USA for his strategy.
If the 2009 Sprinter chassis has a higher tow rating than 2008 which is important to you, you need to be watchful over mismatched chassis/RV years.
