Heartthrob (LMC) or Hooker Headers exhaust kit- which should I get and why?

[CastIron]

I've been looking at exhaust kits for awhile now, and have narrowed it down to these two kits. I've looked into local exhaust shops, but all seem to be too expensive and can't do mandrel bends. I'm looking for some opinions from people who have installed either kit, along with any problems or difficulties they may have had.
My truck is a 1969 GMC C1500 that started like as a pretty boring 307/3 speed but now has a crate 350 in it. It's still mostly original, and I have no plans to build it into a high performance truck. It has hacked together single exhaust at the moment, and I'm sure I will notice a power gain by just going to 2 1/4" dual pipes.

And here is some pictures of the truck, because we all like looking at pics