I don't know if anyone is running an enviroguard breather out there, but I just picked one up, and I need to figure out how to get the unused dipstick plug out to install the oil return line.  I understand that different plugs were used over the years.  Mine appears not to have a lip on it at all, and is just a cylindrical plug pressed in.  Any ideas how I should remove it?

 

 

Try to get a screw started in it and pull out? I've done that to remove seals before.

Finally got a good bit of time to spend on this today.  REALLY having a hard time.  Anyone have any insight.  I unbolted the main harness which is the most in the way of everything.  This gives me about 4-5 good inches of clearance, but I can't seem to figure out any way to get a screw started.  Heck I cant even figure out how to punch a hole in this thing.  It's a small plug on the left hand side of the pan between bolts 4 and 5.  Kind of like a freeze plug as far as I can tell, but VERY small. 

If I remember correctly on mine there was a flat face that sat against the block. Any way you can get a screwdriver or chisel under it?

unfortunately mine is flush, otherwise it would be a breeze to get something under it