I dont know how much is left on mine but one needs to be very carfull. As I was grinding I put my finger on the out side to moniter the heat and any thing else I could feel that might indacate going through. but it is possiable to get rid of it.
Sam

 

Judging by sams picture of his ported intake, his is much smoother than mine is, and the bump is about the same on both of ours. Or lack there of I guess. He kept more vein than I did however, mostly due to my lack of caring. But works just as good I swear. Or at least much better than stock. And it was free. I can promise, anyone with any skill can do this, it's free and a big improvement.

 

I yes this is right on
my pic is kinda deceving I have disk marks thruout the intake very small but there I did scrach the whole intake w/ I think 80 or 120 what ever I had on me at the time after porting.
Sam

 

I may try mine later today. Wish me luck....

Gotta be done by 7:40 though, college football starts! Go VT !