I did reply to your personal message Gary but you obviously didn't get the reply for some reason, I am in the midst of a house move involving moving into temporary accommodation for 6 weeks and the car is in storage so am unable to take any measurements at the moment. I anticipate getting it out of storage within the next 2 weeks, soon as I have it again will measure the intake pipe as requested and PM you. On a different subject there is a feature on LB in the latest issue of Total Kit Car just come out. Haven't read it yet.
cheers
Rob