Before ordering Kit 763-893 please look to see that you don't already have that kit installed.  The main parts of the kit is to replace two existing nose ribs with Doubled Ribs.  There are two types of doubled ribs. One is older and incorrect and the other is correct. The picture below shows the Two types.  The one showing Part Number 20234-031 is not a full double to the rib. This is the older one and is not correct for this kit.  The one showing Part Number 20234-042 shows a full double the the rib and is the correct part for Kit 763-893.  Please verify before ordering.  Call us for any questions.