This winter, my R90/6 is going to feel the wrath of my wrenches. I intend to install a Seibenrock kit and rebuild the heads. Question: Should I find an oil cooler conversion kit (who makes them, by the way?) or should I just opt for an oil pan spacer to increase my volume? I know that the R100 was the only airhead that used or needed an oil cooler. After the build, I assume that because of the increase in power I will have the same needs as an r100 as far as keeping the oil temps under control.
From what I have gathered, converting it to an oil cooler is far more complicated that bolting on an r100 manifold. And using the oil pan spacer is complicated as far as modifying your center stand. Who has experience? Come forth!