i recently changed my truck from auto to manual. my truck is a 97 and the transmission and transfer case are from a 98. where the speedometer plugs into the transfer case on my old setup, isnt on the new transfer case. there is the impression in the case where it should go, but its seeled like its part of the casting. i could possibly knock that out but the pieces would fall into the case(no good). whats the fix for this problem?