Hi, I’m building a 2.0 type 4 conversion to DTM cooling to put into a 73 Karmann Ghia. I’m waiting for the machined parts to arrive and my thoughts are now with camshaft selection for the following spec: The majority of the engine will be standard, mainly used for road use and some motorway cruising. Reliability economy, and a little excitement thrown in would be the main requirements. Twin 40 IDF Webers. Larger 1800 valve heads (3 angle). Electronic Distributor. Running on 95 Octane fuel UK Based. How much would the choice of compression ratio affect my camshaft selection? Any advice would be much appreciated for a first time aircooled builder.