Thought I would give an update.
So last weekend I was going to go to friends on Sat but realized my cheap right handed drill would not fit in. So after a mad scramble I found the only good drill would be a nice Makita wit only a 2.58 width from tip to tip. Found one on Craigslist and drove out that night:
After getting to friends on Sunday, spent a while properly jacking the car up. For the record, the cheap $49 jack and stand kit at O'reillys rocks! It is so small it fits under the car without anyone lifting it.
Next we carefully removed the nut from the 1-4 and the coupler (universal joint was the only way that was going to work, almost stripped the farthest nut before using that). Still would not budge! So removed all the studs with the double nut method and finally got it off:
Per Technoduck, we tried the smallest left handed Cobalt bit and after 15 min of slow drilling the broken stud came out! After many high fives and a beer each, we thought the rest should be easy..... Not!
The header (per my other post) appear to have been warped too much and is the old type without the bellows . After almost stripping the left stud thread on #4, we gave up and realized I needed a new header. We then drank until we passed out (yes on a Sunday night, what is pto for?)
Anyway, got a new header coming tomorrow, and am going to ceramic coat it next week at Sandersons Headers for $100 and then retry this next weekend. My buddies wife is going to kill me since I am taking the garage all this time.