I'm still required to have the factory smog pump on my 1980 to pass the biannual smog inspection in California. I was tightening a fan belt last week and heard a noticeable growl coming from the smog pump. I know there are no new units out there but am wondering if anyone is still running the factory smog pump and had occasion to rebuild it? The last time a had one rebuilt for another vehicle, is lasted about a year and seized up on me. I was hoping to find a reference for someone who can rebuild them to last a very long time. Back in the day, a mechanic told me the smog pump was not really a Toyota part but was instead sourced from the third party and that this same pump was found on MGBs of the same period sold in the US. Not sure if that was true or if it would help me find a reputable rebuilder.