Thanks Mark.
As the 6 speed is now out of the car this is the time to make the decision. I'd hate to put it all back together and THEN wish I'd gone for a 5 speed.
I have a 3.62 diff - I think!
I've noticed that the BGH 5 speeds have an overdrive 5th. Apart from that, comparing the ratios in the 6 speed, there's not that much difference.
I don't want to spend £1000-ish for a 5 speed for nothing, particularly as I think for my use the 6 speed will be OK.
If you don't mind, could you drop me an e-mail concerning the Quaife 5 speed; and what is a semi helical box?
BRG Brooklands SV 😬 It seems that perfection is achieved not when there is nothing more to add, but when there is nothing more to take away. (Antoine de Saint-Exupery)