5 speed flt only 1/4”” plate , with oil fill block off, American made, to complete this swap this is suggested work, packing the drain pplug passage in case with wheelbearing grease and leaving the plate on so everything lined up and running a tap into the passage another 3/8ths inch or so then flush the passage from the top (or cut drainplug in half). hardware to be used for plate to trans case is HD Pn 3594 which is the bolts that hold the sprocket lock plate to the pulley on twin cam. (or cut your current pan bolts down with a cut off wheel)