Koni shocks 273 heads Duster 1/4 glass

Koni adjustable shocks(front) just taken out of my `70 Duster drag car and replaced with 90/10`s.I have only driven this car down the track a few times so no history on the shocks but they seem to work fine.Numbers on shock- 80 1423 SPA1 9012 $30 shipped in US or trade?

273 heads with springs,no rockers or shafts,just pay actual shipping and thier yours.Will get casting,date numbers if needed.

Duster 1/4 glass-1 passenger clear `73 up style w/frame,missing handle screw $20 + shipping, 1 passenger Tinted glass only `70 style $15 + shipping or trade?