rick watters has a set of the newer aussie heads and they are sprinklers as well,,,, there is no metal in the bowl area

i was going to have them cast here in the us with no labels or markings, then make plastic pieces which receive in where the labels and markings need to be

it would prob be 5k for a set of castings,, not enough demand,, so started thinking of a small inch 99 hemi

what matters is the timeslip,, not the dyno number,, guys say you loose 2 tenths and some mph going to a 10.5 tire,, i dont believe that if you can still go 1.17 or so 60 ft