Fits 2005 up 4.6 Liter V8 Mustangs with the 5R55S transmission. Can be ordered with stall speeds up to 3000 RPM and has all bearing construction, furnace brazed fins plus a carbon fiber clutch lining. No trade-in on this one. This performance 5R55S torque converter is built using a Billet Lock-Up Clutch Piston to eliminate the piston rattling problem with the stock type piston. This feature alone is worth $100.00. No down time, keep your old stock converter. No core charge. Can be ordered in stall speeds of 1800 to 3000 RPM. Rated at 600 horse power. Dollar for dollar this converter will do more for your time than any other part.