Well now that we know his priorities, a lot of what I said was unnecessary, lol. But as far as components v. coaxials, the time alignment and DSP functions of the 80PRS will go a long way toward evening the score.
And wow... that's a sweet car. My first Nissan product was a '78 280Z and it has always been one of my favorite cars. So I get why he doesn't want to butcher it up.