I had a pretty bad rear mail seal leak and the engine oil pressure was on the low side. Decided to replace the oil pump at the same time. biggest chore was getting the pan off and back on, it was a very tight fit between the bell housing and front differential. I put the rig on jackstands, disconnected the shocks and let the axle sag as far as possible.
The install of the oil pump was very easy, would have been better to pull the distributor first (it was tricky lining up the oil pump drive with the dist. shaft). I followed Moses' instructions using a 1/2 cordless drill and an old screwdri