[Bill Jennings]

Sebastion,

I have been thinking about your frozen piston.

I discovered in here a couple of years ago that a 50/50 mix of acetone and ATF was amazing at freeing up rusty bolts, but it is cheap to mix up and it wouldn't hurt to try it. The acetone evaporates quickly so just mix up what you need at the time. Applying every few hours for a few days might be worth the effort.

The trick to mig welding is have a decent quality welder that uses a shielding gas and lots of practice. There are quite a few threads in here where the first welds were definately c**p but it was amazing to see how quickly they were able to produce very good beads. If you do get a shop to do the welding make sure your or they get all of the rust out and rust proof their work inside and out.
Have a search for Fishcop's thread well worth the read!

I have to do inner fenders and a corner of my floor in my near future so I am practicing on scrap fenders I got for free from the scrap yard.

The cost buying a decent welder will be much cheaper than getting the body shop to do it and I have the feeling looking at the one sill you will find more rust as you continue to strip.

Cheers
Bill