20' Dyne Thrtle and shift cables

I am looking for the length for twin Mercs on a 20' Dyne Throtle and shift cables. Any ideas?

 

we use 16s for starboard and 18s for port. Depending on routing you could go a foot longer for each.

 

I believe I have made 14 and 16 work, but it was tighter than I would have liked. 16 and 18 is better.

 

16 seemed ok but the 18 was WAY tooo long

 

Maybe they had some 20' cables in an 18' box? Motors are generally really close to 2 feet apart, so an extra 2 feet works really well when going the extra distance to the port motor.

Oh well, too much is better than not enough.