im selling my powerdyne 4.5lbs it has everthing that you will need to put on any 93-96 lt1 camaro it also has an 9lb pulley a bypass valve and it also comes with a rebuild kit that i got for it off ebay.this thing runs great and was on the car for about 2500 miles.the reason for selling it is a just bought a 12lb procharger kit and dont need this one no more $1800.00 plus shipping.