The 050 is rather a poor choice, a stop gap at best. The curves are for a VW type engine. You will never get the performance out of a 912 engine with a 050. The 009 is another one designed for the VW. However, the curve will allow modified engines to run at higher RPM.
Living in Danmark, you should be able to find one of the 912 curved dist. the 020, 031, and 061. The RS00912 is a recurved 009 the works very well on the 912 engine. However, it is recurved in the US and is probably not available in the European market
I doubt you will be very happy with a 050. Especially, if you have ever driven a sorted out proper 912. I have two German made 050's I use as paper weights.
