Wasn't to bad at all removing one from the '73/'80 K-10 and replacing it with one from the '82 K-10. Both tanks have rusted through on the '73/'80 because the plastic guard on the bottom was packed with mud and held moisture. Ironic the guard was supposed to protect the tanks and ended up ruining them! I used enough fuel line (3/8 and 5/16) to reach the tank as it lay on the ground, wiring also. Hope that doesn't cause a problem in the future!