I am a 3 time rider of the ride and you will have no problem with swapping them out for sizes at day 1 when u show up saturday morning. They will have a table set-up for such emergencies such as jersey swaps.
LiveStrong
__________________
Scott J. Luksys LIVESTRONG! Cancer Survivor - Full-Time Cancer Fighter! 2008 Rider 2009 Rider 2010 Rider 2011 Rider