A simple sheet metal screw will keep it from being lifted quickly and absconded with. This link is just a bit more involved (we 1st gen diesel guys treasure our trucks) and will also work quite well. BTW there is a lot of good info here for the gas powered trucks too.

1st gen


"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost coming soon!
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.