I am just saying if you are on a budget you could get them milled for under 50 bucks- and if you port and polish them yourself. But if you arent handy with the tools, Mjr is right, save for a set of better heads. I bought a set of 65 hi-po 289 heads for 150 bucks- shaved them at my shop, ported and polished them by hand and had very little in them, woke up one of my little 302's from the dead. You can do it cheap yourself if you have the resources! If not though you might as well save to get more performance out of that 351!!

 

bored .060 over? might as well find a new block and start over. Its perfectly usable for small apps but if you push it too hard its probably gonna break. You might put down 300 in torque.