bgh/spc gearbox? (also wanted )

[johnny7]

Hi, i would like to change the gearbox on my hpc vx caterham, there seems to be two suppliers of long 1st gear gearboxes (type9) bgh and spc--any prefered? I did the gear calc thing and the bgh 2.66 1st gear seems more road usable than the spc 2.48 geared box-is this right?
And if anyone knows of one that might be for sale/coming up soon etc i would be very intrested, ive a few caterham bits that i would be willing to do a deal with against a good box (ie a nearly new r500carbon tillet/carbon sills/stone gaurds)
thanks john