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Does a hotter coil really make any difference with the mopar ECU? What would be the best parts jobber unit out there?

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Actually the ECU is pretty much just a (coil pri) switch and keeps a constant 42 degrees of dwell. the real power is in coil/ballast selection and the best is an no ballast full 12V E coil and a common parts house 4 pin Mopar replacement ECU or better is a '75 350 chebby HEI OE module or an aftermarket HEI module if OK w non Mopar stuff and can mount the HEI on an alum plate w dielectric grease under the dist hidden as all cheby parts should be. Then dial the dist initial (vac ga method)/total/springs/vac adv IN ORDER and you'll have a killer setup & note "initial" and "total" set w vac adv disconnected/plugged