Thorens 160MKII BC Grace 707 + F9????

The 707 is a rather light weight arm and needs a hi compliance cart, not overly available anymore. If you have a lightweight cart already (hi compliance) then it should be fine if not I’d look elsewhere. Most modern carts are medium/lowish compliance and not a good match to the 707.  All from my memory anyway.  Whats the compliance of the F9? sorry missed that originaly. 

@glennewdick 

Thanks for the response. 

Yes the f9 is high compliance apparently. I will chat to soundsmith and see what upgrade i should make to the cart.

Ideally i would like a removable headshell 

The 707 and F9E or F9R are contemporary stablemates from Grace, fully compatible. SS makes styli for all versions. The Ruby is TOTL, and by many considered one of the top members of the MM pantheon, along with Shure V15, Stanton/Pickering and ADC top models, any of which can work on a 707. The removable headshell version was the 747, iirc, considerably rarer. 

What would make you think that a Grace tonearm marketed contemporaneously with a Grace cartridge would not be a good match?

What a shame, oh well, you certainly didn't spend any time with your head in your hands.

What flexibility do you have when changing arms on a TD160?

707 is 225mm spindle to post, the acos lustre gst-801 is also 225mm, 15mm overhang, removable headshell, magnetics used for tracking force and anti-skate, and super smooth VTA while playing. you would love it I am sure.

I'm on vacation so I cannot pull the manual, anybody know the diameter of the hole to mount it? The bottom is a thick heavy