If you are able to DIY then
@Heckraiser gave a great list including cost to install a turbo. IIRC the cost was ~$3500 which is a lot less than the supercharger. I just finished mine and am not having any the heat issues faced by the SC crowd as the turbo only seems to put out heat when you are using it. I have been driving mine around the past few days of 100+ degree temps and have not passed 200 degree engine temps. So far I am limiting boost to 6 psi and all is great with with stock ECM running premium fuel, (no cel's). Depending on waste-gate & BOV it is easy to increase boost for additional HP gains...something the SC does not offer.