Mechanical tach drive on Pitts s1

[Cub822]

I’d like to keep traditional mechanical tach in Pitts S1 I’m building. (0 360)
Tach is mounted as high on the panel as allowable but cable will still conflict with fuel tank.
Worse on the other end with SD8 alternator crowding engine tach drive plus limited straight shot to firewall.
Going to be some tight curves when routing cable. I’ve seen 90° worm drives adapters but will still require some creative bends.
What can I get away with?
Alternatives?

Thanks
Doug

 

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