I have a 1978 HJ45 and I am upgrading my four speed transmission to a five speed H55F. I want to buy a used transmission hump/tunnel cover so I do not have to alter my original one. I am being told that the shifter location on the five speed transmission is different than the four speed one so I would need to cut into the original transmission cover for them to work. I plan on painting the newly purchased cover to my trucks color and cutting out the holes for the shifters. Ill then save my original one for the future and hope something after market can be made in the future so I can use my original cover one day. I am located in Miami and can have the hump/tunnel shipped to me if needed. Thank you!