On Thu, 8 Feb 2007 08:17:36 +1100 "Paul Smith" <Paul.Smith at auroraenergy.com.au> wrote: > Weren't all the automatics 3.9:1? > Hi Paul, No, Mk. III's and P5B's used 3.54:1 with an automatic. I always heard you could use Range Rover ring and pinion in a P5 and vice versa, but there are some differences somewhere and I'm not sure what they are.