For personal , sentimental reasons , I prefer the '73 - '76 models .
1973 "A" Bodies received :
- Disc brakes standard with 318 V8
- Power disc brakes standard on 340 models
- Spool Motor Mounts
- 8.25" diff replaces the 8.75" diff
- OSAC ( Orifice Spark Advance Control ) module moved from intake to firewall
- EGR ( external ) on 198 , 225 and 318 engines ( 340 was exempt )
- 5x4.5" bolt circle pattern for wheels ( drum brake cars still held on to that stupid 5x4" pattern !! )