Re: Standard spaced pickup on Strat?
It varies. I have a standard-spaced Pearly Gates in my Strat, and the magnets are all under the strings. The E string magnets are off by about 1 or 2 mm on either side. Tonally, I have no problems, as the E strings are just as responsive as all the others. Humbuckers throw off such a big magnetic field it's not really a major issue.
There are so many variations on the Strat bridge though, it's hard to say for certain one way or the other.