aluminium head questions

If you are happy with the street manners of your current setup, but want more for the track, why not think about nitrous with small 50HP jets to meet your goal? A lot less work and a lot less money. Because you are only looking for a small HP increase, you wouldn't even need to upgrade your fuel system as long as you now have at least 3/8" lines. By the way, I just happen to have a complete six pack nitrous setup that I would sell.