as the frame is the same- new and old model. I'd be surprised if Suzuki changed the exhaust mounts, I'd bet an aftermarket full system for a k7-10 wee will fit.
on pre 2007 models you can cut the box and link tube off and put on an aftermarket box with new link pipe, after 2007 they have a massive cat in the 'link' pipe bit and usually means whole new system.
ps, 1000cc's are called Vee's
650cc's are called Wee's!
gets confusing if your asking questions calling it a Vee and it's a 650