thought i might update this.
got the plug out a last weekend.
i ended up pulling the brake master cyl, and brake boosted to make a bit more room for the drill. i started with a pretty small drill bit, just a bit bigger then the hole that was in there. then i took the MAP gas to it, tried the ez out with a 1/2 inch breaker on it. still wouldnt budge.
so i upsized the bit one more time, drill it out, heated it up, but this time, the ez out moved a bit. was a bit worried cause i was n shock it might actually come out! it was slow to come out, but it damn well did.
ran a spark plug chaser to clean up the threads, and now im back using the OEM threads even. since i never fully drilled it out, and just drilled out some of the old spark plug itself. im very happy!
did a compression test. im getting about 160 accross the board. 135 on one cyl. but thats not enough for me to really worry. after all, this is just my beater that wont even be driven daily.
went to change the oil after all this, to find the oil filter adapter was loose, and leaking oil down the side of the block. had to order a new O ring for that. just got it last night, so ill be doing that today.
the truck itself still has a slight miss though. well its just sitting there running, it will have a little stuttur. im gonna clean the maf, and IAC and see if that helps at all. i grabbed a 5.0 maf from my junkyard i might install once its running better. and also have a MAF cone filter, and adapter. ill toss that on with the bigger maf most likely.
just wanted to update everyone, and let everyone know whats going on with the truck. might also help anyone in the future with this same problem researching.