Letting go of my second genuine 914-6 gearbox presently with Mike at Dr Evil.
The trans has race oriented gearing right now with B, GA, M, S, X. This will limit top speed quite a bit (depends on power and rev limit) as X from ZA is somewhere in the 30mph range. Here is a handy page to calculate what that might be for your setup:
https://retro-sport.com/calculator/porsche
Alternatively i can have the gearing set back to stock. A, GA, O, V, ZA. Same price but i need to know by Monday.
Mike is making everything right and the rebuild is $3085. He is worth it and you will have piece of mind knowing it will be outstanding. I paid $5500 for the gearbox.
Asking $6500 plus shipping.