My first car was a 72 Citroen DS21 Pallas with that manual trans that I bought in 78. After that also had a 76 F150 with a 3 on the tree. Had manuals in IH light line, MG's, Mazda, Toyota, Isuzu. Currently have 88 Nissan pickup, 08 Chevy Aveo5, 89 Toyota Camry wagon and 88 S1600 IH with manual trans. I just saw on GovDeals, a 2003 2500HD, 6.0, long bed extra cab, 4x4 with a 5 speed manual trans and 127K miles sell for $9000. So, I would say they are still popular.