If custom is your only option and you’re on a junkyard budget, it’s hard to go wrong with a P-series “canned ham” pump. Used in approximately five billion vehicles, you can’t swing a dead cat in a junkyard without hitting one. They’re plentiful, reliable, and available with a variety of reservoirs, both integrated and remote. They’re also easy to hotrod (see sidebar, “Modding a P-Pump for $0”). After learning that our anemic AMC four-cylinder shares accessory brackets with the more common 258-cube six-cylinder, we were able to score a pump with a reservoir and factory brackets for $80. Craigslist and eBay are your friends.