electric fuel pump.

[sams60gmc]

So a few weeks ago I picked up a Blazer tank to put under the bed of my pickup. The tank was out of a fuel injected Blazer so it has an electric fuel pump. I want to run it as is because I want to have an electric fuel pump after I get a big block in my truck. So what do I need to do to hook it up? Is there any way I can run it to my stock fuel gauge? And I'll have to put a toggle in my truck to turn it on right? Or is there any way I can wire it in to the ignition. Thanks for the help guys. I'm really lost on this one!