Radiator overheating already

[sqrlnts]

Sooo it looks like my cheap $125 aluminum radiator purchase on ebay was not sucha great deal. The cap says Champion on it. Its a champ at overheating alright.

Currently I am running a super cool long water pump with a 16" electric fan with a Flex-a-lite 31165 Variable Speed Control. The puller fan is mounted to a perfectly fitting shroud. 50/50 water/antifreeze mix. The ebay radiator returns on the top in the middle and exits on the lower passenger side. I am also running a overflow tank.

Last weekend I drove the truck around 100 miles on the freeway and local streets, outside temp was 96. When I got back home the truck was hot and pissing out the overflow tank. (I don't have my temp gauge hooked up, I know this needs to be installed. ). When it cooled down it took almost 3 gallons of water to fill it back up. NOT GOOD...

To further complicate things I have ordered my vintage air kit and will be installing in the next few weeks. I have to go to a different pulley setup to drive the compresser. This new pulley setup will enable me to use a mechanical fan which I am strongly considering.

Should I switch to the mechanical fan and shroud before **** canning the ebay radiator?

Also any thoughts on this radiator from Speedway?

As always thanks for helping out.