The 31582 is a hopped up version of the 31581. It came with one of the hop up chassis, worth about $100 (not sure which one, there are two) and a carbon upper deck about $50 (that won't be any good if you convert it to an RR)
The 31583 is the latest version of the car comes with a carbon upper deck already plus all the upgrades to the suspension. Not sure which of the three chassis it comes with haven't seen one in person yet.
Your best buy, the 31583
Last edited by 3434; 04-17-2005 at 02:40 PM.