[jweb]

You want to run a puller fan if possible, they are way more efficient. Just be sure to buy a SPAL or other high quality fan.

As far as radiators you have many options, if you still have the one from your previous engine it will cool the LS. If the stock hose locations will work, you can use a Champion radiator. If you want an LS specific radiator, I used a Superior and I'm very happy with it. See links for both below.

Champion: https://www.jegs.com/i/Champion+Cool...xoCkmcQAvD_BwE

Superior:
https://www.wwwsuperiorradiator.com/...60_chevy_truck