I'm quite familiar with the 27 setup, perhaps someone can enlighten us on the 30. Not sure if the clutch is the same. is the 30 still multiple disc? The trans has the standard shift pattern on the 30. 27 is the backwards one so I don't know what other changes they made. The engines are very similar. 30 has a fuel pump, 27 was vacuum tank I can't think of any other changes.
Anyone working on a 30??