172 Cup gearbox in a Phase 1

[Dave LM]

I appreciate that this topic has been covered on a few occasions, but there seems to be a bit of disagreement re driveshafts....

I have a PH1 with a crunch on fourth gear, so I am now looking at changing the box. If I fit a 172 Cup box for the benefit of lower ratio 5th gear whilst still retaining the cable speedo drive, will this be a straight forward box for box swap, or will I need to change to Cup drive shafts as well?

Thanks!

 

[NorthloopCup]

Yes it's a direct fit mate, and no you won't need cup driveshafts.

 

[Dave LM]

Prompt reply! Thanks