I had trouble with it hill climbing years ago. Just kept getting doggy under a load. After a lot of head scratching a buddy said maybe the coil is breaking down. Well instead of a new coil I went to a bone yard and pulled a whole electronic ignition. From the coil to the distributor the control module and wiring harness. Holy smoke... That baby will pull the wheels off the ground in 3 gears... No trouble at all climbing hills... Been having trouble caving in the oil pan even with the skid plate.
Shade tree MIG welder.
Now a Shade tree TIG welder.