I need to know where i can buy some oversized valves for my 91 Crx Si Head,i wont to have it Portted and polished Like bad ass Posting and Poslishing,if any one knows a shope were i can have the big porting done,and i mean i wont big shit i cant stress that enuff,but i need some one with a flow bench also to get it done,let me know,also about the valves