This is a newer Mallory made Mopar Perf. Distributor. Small block. I worked for over an hour trying to get the vacuum canister pin to engage the breaker plate which has to be done inside the dist. No way is there enough room to get the right angle and everything lined up at once. How were these assembled at the factory? Seems so simple, could keep an idiot busy all day. I had to disassemble to lubricate the advance mechanism, it was sticking so badly. Brand new.