I'm sure you diy it, but figure the pump isn't cheap, all the little fittings add up pretty quick. the thing that sealed the deal for me was the new steel fuel lines and his custom manifold. i like that it reuses the pressure valve. other guys have used holley regulators or other different things. Sure you can machine your own manifold it's just an al block, or even just build it from fittings and tee's but this is ready to bolt in and saves me a bit of time. I like the clean, compact pump/filter bracket too.
So I guess you have to decide if you have extra time or extra money to spend on the truck. I have so many other things to do right now like fuel tanks, exhaust, headlights etc so I need to keep my extra time.