Ya, I have a set of Cat 1.6 aluminum rollers on my 318. It's been a while ago, but I recall the spacers wouldn't work and the adjusters were utter crap. Wound up buying replacement parts from Harland Sharp. Think I had to grind a bit for retainer clearance. Only real worrisome thing I...
hi.
you should check out:
http://www.dutra.org/doug/doug-sl6-exhaust/dutra-duals.htm
also, go to www.slantsix.org and do a search for "dutra duals" and you'll find a ton of information regarding your exhaust or search for other hop-ups to make your slant more enjoyable.
enjoy...