http://www.quaife.co.uk/catalogue/page22.htmFORD ROCKET RANGE CHANGE GEARBOX

Gives instant ‘axle ratio change’ e.g. 4.6 to 5.1
Range change achieved by just twisting the gear lever
Can be changed in any gear
Overall gearbox length remains the same
Dog engagement or synchromesh versions
Also available as a conversion kit
Includes QUAIFE gear lever
Choice of input shaft length
Complete gearbox includes alloy top cover
Optional steel baulk rings and heavy duty operating block for synchro gearbox available (see page 24)
Optional alloy maincase (see below)