Re: sports steering wheel and visibility of dash
330mm is lthe legal diameter, my Boss Viper on my EA is just within it, they also have to be crash-tested and a certificate supplied to be used on a road-going vehicle, hence Isotta and Momo are the only ones that can really be used to be legal.
Basically, as long as you don't get caught, its not illegal!
1988 EA Falcon Sedan
EB II 4.0L Engine Conversion
T5 Manual Trans
EB II 3.27:1 LSD
If they had black box recorders in Commodores, the final words would be "watch this bro!"