Got a 351w short block decked .020 over assembled but was wondering what heads would give me less issues with ptv issues. Pistons are .020 federal mogul with valve reliefs but not sure they would clear 2.02 valves. cam i have is the comp cam xe268h .510/.512 224/230. It's going to be a street car, i have daily driver reliability in mind, would these heads get me to 400hp at the crank? Reason i would go with the 165's is because of the 1.94 valves. also will have the weiand stealth intake and headman long tubes. I have looked through many forums and haven't gotten a clear answer especially with 165's going on a 351w making decent power. thanks for any help!