I had a rounded out flywheel bolt (hex head) and removed it quickly and
easily with a tool called a "bolt out".  The one I used was a Craftsman and
worked well because there was room to put a wrench on it.  You see, the
Craftsman branded ones aren't made to where you can insert a 3/8" rachet
driver ... but there are other brands that are.

If you would like some pictures of the tool I can take some for you in a
matter of minutes.

Anyway, this would be the better way to go.

Mike

>I have the AT out for refurbishing so went to fix the leaking front oil
> seal. Three of the flywheel (flex plate, actually) bolts came out easily,
> the other two remain firmly in place, and now have more of a round hole
> than
> a hex. I have never had the flex plate off: If I were to drill the heads
> off, would there be enough left to use a vise grip or such on the stub
> after
> the plate is out?