Originally Posted by Phoenix82
WHats the differance? is there a service pack to upgrade the chassis?
No, they have many differences. The general geometry is very similar, but the bulkheads have been moved in to be narrower, this changes the mounting holes in the towers and the new towers are different. Arms, upper deck, steering, lower deck, bulkheads, rear hubs, sway bars, etc. are all different. Only some small stuff can be used from the older RDX car- ball studs, steering knuckles, hinge pins, roll center hinge pin blocks, screws, etc. There is not enough similarities to have a service pack.