I've built similar motors that made above 6000 HP after sorting out the aftermarket carbs. All the ones I built and dyno tested for customers that had the original street hemi carbs with similar parts all made above 600 HP with stock jetting
![up up](/ubbthreads/images/graemlins/custom/thumbs_up.gif)
Is your intake manifold stock? If so make sure and replace the right rear secondary jet(rear carb) with a .075 I.D or smaller tp start with, do NOT leave the stock jet in that carb
![tsk tsk](/ubbthreads/images/graemlins/custom/tsk.gif)
It will flood #8 cylinder, those intakes had similar jetting on all the stock street hemi carbs from the factory 1966 to 1971, they had either .065 or .063 in them stock