well i was planning on building my block, compression= in the low to mid 10's, valves and so on, 8 lb pulley and 75......some buddys advise me to doing that since i didnt wanna go through all the hassel with turbo charging my gsr, like keeping up with the motor, imma be traveling back n fourth sometimes later down the road, and wanted some go power in it, so they said dat be good if i was to go supercharge and 75 shots, tune it n so on...