Originally Posted by fastolfart

The drive train is mostly the same as the older BD, though the rear diff is about 200% better. A spool from the BD, Scythe or TC5 will fit without any dramas except for colour. I am using my old JAAD spool with replaceable steel out drives.
Like using steel spools, keep the lube upto the coupling of the alloy diff out drives and you will get a long life out of them. The alloy used is very hard, but if not lubed up it damage quickly.