Got some outerwears for those 394 hd filters I run. part number 100-4567. Had to do a custom order but thought it might help some others if they have an interest in outerwears prefilter.View attachment 66186 View attachment 66187
Did you ever get your outerwares?
Just some mock up pics.
Notice in the second pic the brass bushing / spacer. They are 4.5 mm thick. I used the bushing out of a busted 660 top cover. You need them so you don't break the horn or filter base when you tighten the nuts down.