I found it, this is a list a guy put together for an 01 cobra. These are all new prices, so obviously you will save quite a bit with used parts, but you get the idea.
2003 Supercharger Conversion Cost
Part Number Part Description Part Cost
Misc Items Listed on 2nd page. See descriptions on Page 2. $1800.00
2R3Z 9F593-BA Genuine Ford 2003 Cobra fuel injector (Eight required) $319.92
2R3Z 9E926-AA Genuine Ford 2003 Cobra throttle body $109.99
2R3Z 6A946-BA Genuine Ford 2003 Cobra blower belt cover $135.99
2R3Z 6F066-AA Genuine Ford 2003 Cobra supercharger $1,199.99
2R3Z 6K775-BA Genuine Ford 2003 Cobra intercooler assembly $299.99
2R3Z 9424-BB Genuine Ford 2003 Cobra lower intake $399.99
3R3Z 9424-DA Genuine Ford 2003 Cobra upper intake assembly, includes, EGR, Bracket, TB, IAC, and snake emblem $399.99
2R3Z 9600-AA Genuine Ford 2003 Cobra air cleaner assembly $124.99
2R3Z 6312-BA Genuine Ford 2003 Cobra SC aux drive pulley, idler pulley and mounting bracket $239.99
2R3Z 9A758-AA Genuine Ford 2003 Cobra throttle cable $22.99
2R3Z 3490-AA Genuine Ford 2003 Cobra P/S Reservoir Bracket $39.99
2R3Z 9L443-AA Genuine Ford 2003 Cobra I/C coolant line $12.99
2R3Z 9L443-BA Genuine Ford 2003 Cobra I/C coolant line $12.99
2R3Z 9L443-CA Genuine Ford 2003 Cobra I/C coolant line $11.99
2R3Z 9L443-DA Genuine Ford 2003 Cobra I/C coolant line $11.99
2R3Z 9L443-EA Genuine Ford 2003 Cobra I/C coolant line $11.99
2R3Z 9N491-CA Genuine Ford 2003 Cobra I/C coolant line $31.99
2R3Z 9L443-GA Genuine Ford 2003 Cobra I/C coolant line $11.99
2R3Z 9L443-FA Genuine Ford 2003 Cobra I/C coolant line $11.99
2R3Z 9N491-HA Tube Assembly $108.99
2R3Z 9258-CA Bracket $10.99
2R3Z 8K226-AA I/C coolant radiator $399.99
2R3Z 9H307-AA Genuine Ford 2003 Cobra Fuel Pump & Sender $349.99
Total Cost (Minus Shipping) $6081.17