As the title says which would be better to work up and go on a 6.0 LQ4? I can get a set of either for 200-300 $. If i go with 6.0 heads they will be milled as much as possible without getting into any other mods. 5.3 heads will require the intake valve seat to be enlarged but could run stock length pushrods but may end up with too high CR for pump gas. This is a budget build, reason for going with LR/LM, 317 heads instead of 243's. Anyone done this before? Tell me what would the masterminds on here do?