hi im thinking about fitting a f28 in my astra gsi mk 3 1998 modle with the 2ltr ecotec engine fitted.
is my standerd gear box an f18 close ratio box?
what i would like to know is
will the gear ratios be the same but with an extra gear ?( 6th )
what will it do to the 0-60 times and top speed?
what diffrence would it do iff i fit a f20 long ratio rear gox?
dose the f20 and f18 gear boxs have the same mounting points?
some one please help