Steering wheel size

[bugluv]

Hi Everyone,

Sorry if this has been done before,I tried searching and couldn't find anything.
I have a 1974 1303 and want to put a non-stock steering wheel in. However the temporary sports steering wheel that is in there at the moment is too small in diameter and blocks some of my speedo. I know this is a common problem in 1303's. What size steering wheel is big enough to stop this problem? And what different makes of steering wheel offer one in the correct size?

It shouldnt make a difference but this is for a RHD car in Australia.

Thanks