My dad has a 402 he's building for the street. Has K/B 160 pistons, and the machine shop guys told him he needs 118cc heads to get him to around 9.9 or so on the CR. Can you recommend a closed chamber head for this? (thats what the machine guys say he needs) We need something generic, no exotic heads, just a good street head. Thanks, Jimmy Oh ya oval port I think.