Joe - Here's the FireCore 50's that were on my 340 in the old Dart...used MSD seperators. They were a nice fit. Little tight on the pass. valve cover on #6 if memory serves me...again. I like them, but for $105 it's a little excessive.
High quality separators are the key to a good looking set of wires. Also when I remove the dist cap the wires stay together... no more guessing which wire goes where.