You can use an
auto ECU in a
manual but you can't use a
manual ECU in an
auto (If my memory is correct - which it probably isnt
)
And GR and GPX ECUs are different. Can't be used in replacement of each other.
Vin for a
manual GR (sport) - 6U900DE3A0103025
The gearboxes between a GR and a GPX are different too. They have slightly different ratios. Most GPX gearboxes also have a standard full slip diff, while GPvR gearboxes have an
LSD so ultimately you wouldn't want to put a GPX gearbox into a GPvR (unless it had the option
LSD) because you'd be going backwards. Unless you want to change out diffs and stuff.. just asked Bennoz and yes, you can upgrade diffs in the same gearbox. $$ though.