Did you try using adapter fittings from your local auto parts store to use as reducers. You might even be able to fit them in your pipes like the silencers fit inside of rice cannons.

 

Yeah I did, just trying to find the right combination. Also they kee falling out after 2 weeks or so. Its hard to secure them. I plan to drill a small hole in the bottom of the tips, and fit a small self tapping screw in to secure them. Any other ideas?

38graps- you haven't been here long, so I will catch you up. I lost alot of low end power by freeing up my exhaust to much, so now I have to add some restriction to get my low end back.