Can a 914 be flat towed (all four wheels turning) with the tranny in neutral, for 1700 miles?

Yes! I think my max tow was about 1100 but no reason you couldn't go further.

Yup. 2 or 2K. It will work fine.

& if you need a bracket ...I have a solution

Flat towed my 73 2.0 auto-X car from 1989 til my last event in 2014. No problems.

I have flat towed many times. I've done more than 2k overall on a trip with no problem.

Just make sure your alignment is good and the key is turned to unlock the front wheels when you tow. You want them to turn with the car instead of fighting the steering lock the whole way.

Zach

Awesome, thanks all for the replies

No problem, just don't back up. Un-hitch.