This is a good used Austin Healey100 -  BN1 overdrive transmission adapter housing. OEM part number YN2030 .Fits all BN1 overdrive gearboxes. This is different from the side shift and center shift adapters. NLA. This plate is in excellent condition, with no warps, cracks or breaks, The bearing housing is in excellent condition. Buyer pays shipping of $22.50 in the USA by post office mail. Local pick up is also welcome! Please check out our other auctions. Thanks for looking and good luck!