you need an L67 map sensor and a wire harness conversion to be able to plug it in. I have an extra map sensor that I would let go for 20 bucks, and you can have the bracket that bolts it to the supercharger, but shipping is going to be more because the bracket is bigger than it needs to be. Map stands for manifold absolute pressure. the way a supercharger or turbo works is that it increases the pressure in the manifold, so the atmosphere gets sucked in more to fill the void created by the increased pressure, and a 1 bar map sensor doesn't have the capacity to measure the increased manifold pressure, while an L67 does because it is 2 bars. you can get the wire harness conversion from caspers electronics, and maybe someone can chime in if you can just find someone doing a partout and have the map sensor wire harness cut off and spliced/soldered in on your car.
you should be fine running a heavier valve spring on stock rockers, but I'm not sure I would mess with the shift points until you actually do the rockers. some people suggest the 90lb valve springs, while others suggest 105 lb.
