You might want to wait one morte week. I was told by a speed shop (Racer Walsh) in Jax, fl. That Roush Racing is releasing two new head designs for 351/302 in about a week and that they're supposed to flow better than victor jr's right out of the box with smaller intake runners. you might also want to look at canefeilds.
www.panhandleperformance.com has an interesting article comparing flow rates of various heads too.