Got me a new Dart Swinger

Got a new well new to me Dart. 340ci bored and stroked to 416ci 340-exhaust manifolds and factory intake. Thinking of bolting up my LA Performer RPM AirGap on and replacing the Edelbrock for a Holley 750. Any thoughts and opinions? Current configuration dyno at 380hp 490hp. Any guesses on if I swap the intake or any opinions on what I should do??

also anyone point me to a link for some affordable 5 on 4 15 Cragar SS for my rear the 14” seem so tiny

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