Hi, I just got a 261 and i've started tearing it apart. This seems like a silly question, but how do i take the oil pump out? I unscrewed the line from the oil pump back into the black, and it won't come out. So, i figured i'd just take the whole pump out. It looks like its held in with 2 bolts through the block, but i cleaned off the head of the bolts and they have round heads! How do I get these suckers outta here!? Thanks!

1955 Chevrolet 210 2 door Sedan
a 30,000 mile UNMOLESTED original, now my daily driver! Original 6 cylinder with a rebuilt '66-'69 Saginaw 3-speed Overdrive. Synchro low! Otherwise, everything original down to the spare tire. Interior is like new. Needs paint, but absolutely zero rust.