ok, I've been thinking about having my head ported, and putting in the catcams cams, and have recently found out that I can only use Intake cam due to the VVTI on my GT. I was thinking abouty it getting custom valves made to get some better airflow through my 1zz. I was thinking about going 2.02" on the Intake valves, and 1.65" on the exhaust, but I'm not sure there is enough room. What do you guys think? ANyone with any info or opinions is more than welcome to post