Hey Joesph, I see you made it. I told you these guys are great, didn't I?
On the MSD Pro Billet HEI, here is another vote for it. That thing is a work of art. Trouble with a stock GM HEI is finding a good one. Most you see in junkyards are there for a good reason, junk. They will most likely need rebuilding. By the time you upgrade the coil and internals, you don't like much being able to get the Pro Billet. There are plenty of ways you can go on ignition. I have the Pro Billet HEI with a 6AL box and Blaster 2 coil. This was an after thought. If at the time I bought the Pro Billet HEI I had known I was going to go with the 6AL, I would have bought a MSD non HEI unit. But hindsight is 20/20, right?
Anyway, glad you decided to join us truck nuts.