The wheel you linked is a 9 bolt hub. You need a 6 bolt.
I'd give Iconic a call as the MK4 is usually there or they can possibly get their hands on one as a take-off from a roller.
A Volante S6 may fit. I'd pull your center cap and measure the screw pattern size to verify.
https://www.summitracing.com/tx/sear...5%2B4294557140
https://www.volantesteeringwheels.co...ts.asp?Cat=456