Duct set inkl. Brezel rear defrost challenger 1970

[Chally1970]

Hi

i drive a challenger 1970 r/t manuel in Pulmcrazy and looking for a duct set inkl Brezel rear defrost. I do have the blower, the hoses but not the plastic things
is there anybody outside who do hv this stuff in storage or may hv a tip where to find?

Thanks 
Chally1970