85commolux

Hi all, I am looking at going straight gas on my stock blue 253 powered Hilux and am after some honest opinion on which setup to go. I was looking at an Impco 425 mixer as it will bolt directly to the quaddy throttle plate but I was wondering if the 425 would be overkill on this engine as I don't really get up to 5000 rpm and it is a stocker. But I am also in the process of looking at rebuilding as well. Any thoughts would be very much appreciated. Thanks