Will that gun do a pretty good job with SPI clears too? I'm also doing a metallic blue and I don't mind buying a couple of different guns but the base is the most critical so I'm leaning towards this gun but it would be nice if it would shoot a nice clear coat as well. Or should I consider a specific gun for clear? Is the main difference between the silver cap and the purple cap just the cap or does the needle and nozzle change as well? I've painted a half dozen cars and Jeeps with Binks and Sharp siphon guns a long time ago but I need to get current for this next car. Thanks for a great forum.