Yeah I have a set of comp 278's. I built this bottom end for them and cant use the cams. I 'put a set of stock cobra pistons with flycuts the fit the vavles, well it didn't work. So I had to put stockers back in. I was going to buy a set of steeda pullies, but I just could'nt bring my self to do it. I'am either going supercharger or custom turbo setup, so untill I decide witch one, I not going to buy.
I got it running on saturday, and it sounds great, just wish I had the 278's back, they sounded ****** sweet. I'am working on a stroker kit that will work with my cams.