I have a 1949 chevy fleetline, and I'm missing my rear passenger side window regulator. Can I use a rear regulator off of a 4 door? Thanks.
I presume you could however it would need to be modified to replicate the OEM scissor mechanism, arm lengths, sash channels etc to maintain OEM geometry, a mirror image of the driver's side rear mechanism that you already have. http://chevy.oldcarmanualproject.com/fisher/1949/49fbsm032.htm