3:54 IS A TALLER GEAR AS IN THE RS2000 AND AUTO ESCORTS 3:77 IN THE MEXICO
3:9 OR 4:1 ARE FOR SPRINTING SHORTER RATIO. 3:9 IS WHAT I HAVE IN MY MK1 WITH A PINTO AND WITH A 5 SPEED WORKS GOOD FOR ME.
4:1 IS REALLY FOR SHORT/QUARTER MILE,UPTO 100MPH.AS IS 4:4 BUT THESE ARE USUALLY EXPENSIVE