Anthony, If you are doing it yourself the cost of parts will run close to $100 for the overhaul kit, $31 for the thrust washer kit, $80 for the bushing kit, $19 for the intermediate band, $30 for the green stripe modulator. That comes to about $260 in parts. To that you should add a torque converter and Cooler kit. Add another $20 for flush and sealer. added: If a shop does it you can figure between $800 and $1700 depending on the shop rate and how they charge. Flat rate for the C4 is about 6 hrs for R & R and overhaul. If they flush the cooler add .5 hr. and if you want their warranty add their price of a converter.
