Ebay/boost/SD/SAU for a 3inch cat... I mean by all means buy a new one and gut it, or just pay bugger all for a 2nd hand 3inch one. There are rubbish 3inch cats (new) on ebay, that blow the core out pretty quick, maybe just pick one of those up... Not that Im condoning a gutted pussy.
Pretty sure Taz was able to get arms?? Both China and none China. Whiteline Rear arms are cheap these days too.. I am a big fan of some of the Australian made arms at the moment..
If you have the budget, ikea formula no questions asked.