Savage 21 BL Conversion - From The Beginning...Advice Appreciated =)

Hi man, thanks =)

The bulks hold up very well, and keep things very solid...
I can't be certain, and correct me if i'm wrong please, but i think i read once that the xl bones are larger at the dogbone end (and may even be slightly longer?), which means they have larger inputs at the diff cup/axles??

I'm not sure if there are any problems installing them on the FLM bulks, as to be honest, i havent really been keeping up to date with everything of late, and forget most of what i used to know -lol-

I can remember seeing a few users here with the flm bulks as well, so maybe they have used the xl bones? I just have the stock sav21 bones in at the moment - they're not real pretty, and sorta starting to rust, but holding up fine =)