I spent about an hour Monday installing a new MSD-6A into the truck and i would recomend it to anyone. Its feels like its alot better response and it runs and idles alot better then it used too. I chose the 6A instead of the 6AL because it saves 40 bucks and i dont need a rev limiter. The install was a piece of cake and the instructions were dead on. The wires have the right connectors to plug into the stock harness and keeps the install pretty clean.
on summit they are 174.90 and they give 15 summit bucks for buying it. I installed mine inside my cab because i want to keep it away from the water and mud but the only down falls is the positive lead it short so it needs to be cut and lengthened. and if you do alot of crusing i recommend it in the engine bay because of an annoying hum that comes from the box that cant be heard of 25-35 mph.
I would recomend this for more hp, tq and mpg (even tho i cant confirm the number yet).