Kats block heater 10612

[M1028A1ShelterCarrier]

I just got my Kats freeze plug block heater today from Kragen for 12 bucks. The instructions are very poor. I was wondering which freeze plug to remove. I hope somebody has a trick to remove the hidden 20+ year plugs that will be frozen to the block. Any ideas/ pics

 

[Hookin1]

First pick the easiest one to get to. I hav'nt put one in a cucv,but on road trucks usually use a slide hammer.....of course it is easier when the hood tilts up .on pickups i have hit them on one side with a chisel and turned them sideways then pull the out with visegrips and a prybar.Hope this helps.....goodluck