In the process of building up a 72 351w block, I have kb flat tops(w 2 reliefs) stock crank/rods, comp double roller, and xe268h cam, ported dooe heads, comp calculator says 10.3:1. Not looking to make a race car just a fun car to take to the strip once in a while. Any body run a similar combo or have any idea what this will make for power? I'm thinking 270ish rwhp is that way off? Thanks