Okay, first off, hitting the bolt (even with the nut on) is a horrible idea.
I managed to free one bolt, but noticed that the threads have been damaged. The other bolt still refuses to come free and I've got a nice bend in the threads to remind me why I should not do that again.

It appears that everything with a tube and bolt through it is seized up - including the anti-swaybar bolts... I had to cut those off... arg.

I got the passenger side A-arm off after liberal application penetrating oil and the application of a 1/2 drive electric impact wrench and a 7/8 socket. The back-and-forth approach worked here and it took about 5 minutes of wrenching it to get it to move and a few more to get it spinning so that I could drive the bolt out with a drift. There was evidence of surface rust where the

The driver's side arm is still hard as a rock. I've gone at it for several sessions with the impact driver interspersed with penetrating oil and a few whacks on both ends of the bolt. It is as though it was welded in there.
The pivot bolt seems to be stuck to the bushing sleeves. I can move the A arm/pivot bolt, but that's about it.

I'll give heat a try.

I *really* hope that the bolts on the 130 are less of a problem. So far I've not found anything seized on that car...