I took my pto and manual lift off my 66 and ran into no problems.   The clutch is up by the engine so no worries there.    Just keep an eye on the  transmission grease level and everything should be fine.  I presume you will be pulling it and there won&#039;t be any long days in the field.  good luck and how much does it weigh now?   My 66 with 12.4 x 38s on the back weighs in at 2750.