After reading this thread and looking at some good results I decided to do my RB25. I used Holts MetalCast Anodised Blue, which has some mixed reviews. However I have found the reuslts to be fantastic.
I started with a good prep of sanding with 400grit then 1200 on both rocker covers, cam cover and the exhaust manafold shield. Used a lot of degreaser to make sure the surfaces was right. With the sanding I was back to bare metal in man cases however its hard to get all the little spots. Overall this took about 30min per piece.
I started then with the Hoyts MetalCoat primer, which by itself actually looks pretty good. I did a number of coats within 10min until the items looked perfect. Then I commenced with the color. Overall I did approx 5 coats with 10min of each over with th elast coat being quite heavy. Once they are left to cure, the anodised color really comes up, each bit looks really good however my camera could pic up the shine.
Once its been left for about 1 week I will start with a high temp clear to bring up even more gloss and protection.
Some of the pics from yesterday after I left them to sit overnight, bit of dust already on them! The gloss doesnt show up in the pics, but I can assure you its there in a big way. Need to learn how to use my new SLR!