sliding window question ?

[fpjr0]

is there more than 1 kind of sliding rear window?
I have been missing the pieces on the middle where the sliding glass latches, so I called lmc, and they didnt know if theirs would fit my window, so I went to the junk yard and after walking for a long long time on this cool wheater under the sun in south tx (+80). I couldnt find a single square body with the same style sliding rear window, I bought the latch piece anyways since it was only 6 bucks, but then I can home only to find out that the piece is about 1 inch too short any ideas,,,,, I wounder if the lmc latch system will work ????? any body had the same problem b4?\
thanks in adcanced....