Flowmaster Slimline Alternatives/Availability

[CP82AERO]

I'm not looking to necessarily awaken the well documented merits and debates on various side pipe muffler solutions, but rather to see if there is a viable alternative to the discontinued Flowmaster slimline pies/mufflers. They seemed like a win-win from the aspect of sound-attenuation and flow-thru (little to no power loss). I built up a 351W/427 ci and so am looking for ample flow-thru.
Thanks, and if someone has a lead on a pair of slimlines sitting on a shelf they want to sell I'm interested!

[CP82AERO]

I guess no lead on slimlines or equivalent?

[egchewy79]

Have you looked into gas-n pipes ?

[Greg K]

I guess no lead on slimlines or equivalent?

Look up classic chambered

[frankeeski]

Look up classic chambered

http://classicchambered.com/classic/cobra.html

[CP82AERO]

Good stuff--thanks!