or, you could add the Derale oil cooler kit. It adds a sandwich plate that goes between the oil filter and the block. It can lower your oil temps by around 20 degrees. Cost is under $200 for the parts, and worth it if you are running oil temps of 250+
As an aside, for me I don't trust push lock oil lines. I had an oil cooler like this on another car and one of the high quality Aeroquip lines burst on the freeway and spit out all my engine oil. There is a company called PIRTEK, and they will make custom high pressure hydraulic lines (1000psi plus capable) for you. They cost me between 30 and 50 USD a piece and I redid my whole engine bay with them (on my race car...I haven't touched the truck bay yet). Bullet proof stuff.
Also, you can get a larger oil pan from Moroso or one of their competitors. That can expand your oil capacity to 6 quarts, and the oil cooler setup will use about a half a quart, so in the end you can get to 6.5 quarts + of oil capacity. After I did all that on my race car, it never got over 190 degrees even if you were to sit on the rev limiter for a prolonged period of time (and no, don't do that unless you have full race heads and valvetrain that are made for it, like mine was).
