Steve
I have an -M1B on a -7. Here's a photo of my Andair separator install.
The -M1B breather is pointing in pretty much the right direction for the separator in this FW location..
I'm not sure yet what I will do with the FF-705 tube but I figure I will be able to use some of it.
I have also bought some MIL DTL 6000 Soft Flexible Hose to replace the Van's supplied hose.
Hope that is of some help.
p.s. a common position I have seen for the separator is top centre of the FW. My engine (a Mattituck) has a 90 degree oil filter adapter. If I had put the separator FW top centre then I would have had oil breather hose basically wrapped around the oil filter which I though would have made future filter changes more cumbersome. My chosen location gives a much straighter hose run from the engine breather fitting to the separator.