True in Australia, but he's from Finland. Chances are he has an RA20/RA21.
ehh, Finland, eh? I knew that Norbie. I was just testing you
Not sure about the RA20, but the RA21-MQ had the 18RG and the RA21-MQR had the 18RG-R. This is circa 1974/75. I don't think the 18RGEU engine was available at that time - it came later.
In regards to Witzl's reply, I was under the impression the 18RGEU came out in the RA28 series. I'm sure the RA35 had it, but then again I may be wrong.