Sorry, I bought this a while back, so it's not available anymore.
I have it running, works great (thanks Philippe for the awesome deal!).
Microsquirt is a miniaturized version of Megasquirt 2. It has a nice weatherproof connector, and a much smaller case. It's also set up for 2 ignition outputs out of the box, not one like a Megasquirt 2. The downside is that it's much harder to modify, and it costs more. It's aimed at motorcycles, but it works for nearly any engine. I'm using it on a SHO V6.
Megasquirt is tricky to install because the instructions have to be written in an "open-ended" way, to accomodate all the different engines it could be installed on. My first Megasquirted motor, I was able to find a specific walkthrough for setting Megasquirt up on that engine, so it was a lot easier. Now, I know what I'm doing a bit more, so setting the Microsquirt up wasn't a big deal. Definitely a steep learning curve, but so nice once it's going.
EDIT - Just noticed you've got a 4g63, that's the engine I found the walkthrough for. Here's a link. I did it a little differently than this, since I was installing Megasquirt 3, and had sequential injection + ignition.http://www.diyautotune.com/tech_article ... _laser.htm