DESCRIPTION DESCRIPTION: Three diameters are available for the 6R80 Pro Series. 245mm is good for lighter cars and big NA setups. 258mm is great for heavy cars and smaller trucks, bigger power setups, or more of a performance street build. 265mm is for a really big power setup or large heavy trucks. FEATURES FEATURES: 100 Square Inches of Clutch Lining for WOT Lock-Up Furnace Brazed Hand TIG Welded Torrington Style Bearings Billet Front Cover and Billet Lockup Apply Piston Flanged Impeller Hub for Anti-Flex Durability Hand Assembled to Exacting Tolerances REQUIREMENTS NOTES & REQUIREMENTS: If you are unsure of which converter to order, we would be happy to spec one for you. BUILD TIME COULD BE 5-6 WEEKS. SPECIAL ORDERS ONCED THEY ARE PLACED CAN'T BE CANCELLED. TUNING IS REQUIRED FOR THIS PRODUCT IF YOU DO NOT HAVE AN ADVANCED OMEGA TUNE, YOU CAN ADD ONE TO YOUR PURCHASE AT A DISCOUNTED RATE, USING THE DROP-DOWN MENU. IF YOU HAVE AN EXISTING ADVANCED OMEGA TUNE, YOU WILL NEED A RE-TUNE. IF YOU HAVE A BASIC TUNE YOU WILL NEED TO UPGRADE TO ADVANCED. USE THE DROP-DOWN MENU. IF YOU ARE ADDING AN OMEGA TUNE TO YOUR ORDER, PLEASE FILL OUT THE TUNE FORM TO CLAIM YOUR TUNE. (HP TUNERS DEVICE REQUIRED)