Any E-Fan setup will be way more successful in Canada than Australia! John you've done a great job there. Unfortunately in Australia we have far more difficulty doing this conversion successfully since our average ambients are worlds apart. When I embarked on this journey about 5 years ago I lived in the top 10% of the hottest regions in this country. I wanted to implement a system that worked more like a modern day car that utilised a lot of passive cooling and the fan would cut in as required. After many different attempts and designs, the only way I managed to successfully do this was to put in the largest radiator that will fit in a Z32 and that was a 60mm dual core radiator for an NA. This was impossible to do until I decided to discard intercooling and move to water injection. I also relocated the engine oil cooler to the R/S intercooler duct which takes that dispersed heat away from the radiator. My setup is switched via the ECU as this way you can control the fan according to vehicle speed so it works with the air conditioning properly but I guess in Canada you could probably go without it. My fans are twin setup (fits on the larger radiator face) from a 1996 Ford Falcon that moves approximately 4000CFM and a lot quieter than a single fan like the SPAL.