Stock big block radiator cooling 700hp

You should be Ok to about 450hp, so on the street that would be what? maybe 2% of the time? If you have to wait for a rad, it just means you can't floor it for 11 seconds atta time. Well maybe just once every couple of minutes or so......
I heard the roads in Ontario are the worst in the country, so will that be a hardship?
Aw, I'm just tugging on your leg, Manitoba roads are for sure the worst.... at least West of Ontario,lol.