1973-1974 RM21 vs RM23

[RR Fan Dan]

I was shopping for replacement glass and they had different quarter glass listed for a RM23 Roadrunner. My 1974 is a RM21 Roadrunner with fixed quarter glass. I believe that it is a coupe. My understanding was you could only get roll down quarter glass with power windows. Does roll down glass make a RM23 HT and fixed glass a RM21 Coupe? What is the difference between RM21 and RM23? Confused.

 

[YY1]

23 is roll down rear windows.

They do not need to be power.

21 is fixed rear windows. That changed through the years, from posts around the door windows and a completely different roofline, to simply different glass and no mechanism.

IIRC "all" 71/72 RRs were 23 body and "all" 73/74 were 21 body.

 

[rm2173!]

I have a 73 roadrunner with fixed rear windows could not find new glass all they had was for rollup window I orderd them anyway if u narrowthe bracket and make it shorter they fit

 

[YY1]

I have a "rollup conversion" for my "21 body" 73 Satellite.

They are definitely different.

I wonder if the glass could go the other way?

My sedan glass is near perfect, and the glass I got with the mechanisms is scratched up pretty bad in a couple areas.

 

[RR Fan Dan]

I have a 73 roadrunner with fixed rear windows could not find new glass all they had was for rollup window I orderd them anyway if u narrowthe bracket and make it shorter they fit

I can’t find the rear qtr glass either. Do you have pictures of how you did this?

I have a "rollup conversion" for my "21 body" 73 Satellite.

They are definitely different.

I wonder if the glass could go the other way?

My sedan glass is near perfect, and the glass I got with the mechanisms is scratched up pretty bad in a couple areas.

I am having the same problem maybe @rm2173! can show us how he did it,

 

[rm2173!]

i do not have apic but i will take pics tonight