How much will this combo make
440ish
Your better heads and M6 will prolly get you 25 or so over my car with a similiar cam. Maybe even a little more but your rear will eat some too. Just a guess though and a lot of other things can affect it like dyno and engine health.
To give you an idea, i am cam only making 404 RWHP and my stock injectors are at 98% duty cycle. At 108% duty cycly the injectors are constantly spraying. IMO go with 42# injectors
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