Re: Fatty Beef Pickups
G&L MFD singles from the S-500, Tom Anderson has some fat ones, I have one guitar with a 1/4lb in the neck and it's a little too fat. I wish it were the tapped one, but then I wound my own 1/4lb tapped for another guitar, so I have both now. I like the Dimarzio Rails, like the Cruiser and Fast Track when you have to go beyond normal single coil output levels. In the same 1/4" magnet realm, I have an '83 Ibanez Roadstar strat that has three 1/4" singles but it's with ceramic magnets and steel poles. They are pretty fat and juicy. The Duncan Custom Staggered/Flat is a great pickup, too.
You have to narrow down what you mean by fat, though. Basically you have to decide how much of the strat's clicky attack and crisp, glassy treble you want to retain. You retain the most IMO with the G&L or the rails, while the 1/4" magnets and/or dramatically overwound single will produce more subdued highs, and a smoother attack.