I'm looking at putting an '07 cannondale street tandem on layaway tomorrow and starting to think about what upgrades I will be wanting to do down the road a bit. I'd like to know going in some more stuff than is found on the cannondale website, like if their Mountain frame found on the Street tandem if suspension corrected/compatible? It doesn't look like the stock fork is sus. corrected, but will it take a short travel fork ok? Thanks!