Which Cylinder head?

[DBMajik]

There was a test between heads. If I remember correctly, Polk Performance did it. Unfortunately I read it a long time ago on tuners and can't find it again. It's a little fuzzy from my head so take these numbers with a grain of salt. The 2g head only flowed 30 cfm less in stock form. However, the 1g head only flowed more 5500+rpm. Again, with a grain of salt.

My opinion, Andrew, is for you to go with the 2g head. That way, after you complete your goals; all you have to do is port the head and it will by far outflow any 1g head. Ported or not. That is, if you decide you should want more power after that.

As far as the E85 corrosion problem, you might as well get Viton O rings since you'll need a larger fuel pump and injectors anyway. It's up to you if you want to use the rubber fuel lines or not. I have used E85 but not enough to actually test the corrosiveness on rubber. I'd go with stainless braided lines anyway, it's a cleaner look and you get more fuel with the bigger lines. Also, this will aid when you install an adjustable fuel pressure regulator.