Converting to electric fans

[foriamclever]

I'm looking to convert to electric cooling fans, what with the ridiculous Texas heat and all. Can anybody give me any advice as to which fan I ought to go with? I'm running a fairly stock 350 with headers, no a/c, with an external transmission cooler. I'm seeing a whole lot of different products and prices. I wanna keep it as cheap as I can cause I'm poor, but I don't wanna buy some hunk of crap that won't work. Thanks in advance for the help.