I'm hoping to sell them with the wheels as they are perfect for the SC430 wheels - if I sell the wheels separately, though, I'll let the spacers go too. Are you interested in the wheels, too?
The exhaust is a custom back box delete setup that sounds great. You just need to cut your back boxes off and clamp these to the pipe. I made it a non-welding modification due to lack of a mig. You need to cut two cutouts in the bumper - I'll upload some pics. Can't help with fitment - I'd presume they're the same?