thanks for the info roy.
given that i drive a sierra cosworth rs500 almost as an every day car, i am used to having lag and it not being so punchy in the lower rpm range, so that won't be a problem for me, although as i am looking at buying an r32 gts-t as an every day car and potential track warrior later on, i'd like to go for a setup that will be better than what i have now with my cossie.
i actually like how u mention u can cruise on the fwy with low fuel usage, as i'm looking for it to be quite economical when the power is not needed.