Is There A Difference Between Standard R32 Gtr Steering Wheels?

[Johnspec]

Hi,

I'm wondering what the difference is between the two r32 GTR steering wheels I've come across. Both are identical from the front, but

Wheel 1: Has a round 'boss kit' at the back and is about 1cm smaller than;

Wheel 2: Which has a plastic piece running along the back 'handles' which shapes into the boss kit.

Could wheel 2 be from a '92-'94 model and wheel 1 from an '89 - '91 model? Are they interchangeable? (I know there's a HICAS sensor) connector on both which appears to be different between the two.

I don't have any photos I'm afraid but some advice from anyone knowledgeable would be appreciated.

Cheers

J