I think it all depends on how you plan to attach the new channels. Glue or similar, you might be able to leave the wing window somewhat in place. If though, you plan to rivet in the new channel, I 'd think removal would be necessary.


Craig

My '50 Chevy 3100 5 window, '62-235cu, 3:55 rear
My truck ....... Respect The Rust
If I'm not working on my truck, '65 m00stang or VW camper, I'm fishing with the wife or smoking Salmon.