Has anyone who bought the gmpp honed exhaust manifold(header) checked the finish inside? I just got mine tonight and I am not impressed with the honing finish, I'm going to compare it to the factory manifold when I remove it but I'm just not excited with the inside finish. The tech across the shop has an exhaust manifold for his duramax that is cast as well and it is as smooth as a babies bottom inside. I have no pics yet as I just got home but man I thought it would be alot better than that.