Hi everyone. I’ve had one hell of a time trying to fix my ignition system on my Discovery 1. I’ve replaced the ignition coil wires and the distributor. Coil and wires are by Mallory and the distributor is a parallax distributor. The engin is perfectly timed. However whenever I shift into gear and put load on the system, the truck sputters and jolts. But with the regular bosh coil this was not a problem. However the stock bosh coil would burn up after driving for a short distance. Do I need better spark plug wires or maybe a clutch issue?

new k&n air filter and there is pressure in the fuel line just an FYI