Hi,
here are details, some are already discussed very often, e.g.
https://www.sl113.org/forums/index.php?topic=25187.0 .
- Fan shroud: 1135050555 replaced by 1135050655
Bud's remake doesn't look very good. In my opinion even an aligned W108/W109 plastic shroud (1085050255, 1095050855) looks better.
- 9-blade fan:
For cars with air contdition (US) originally an 8-blade fan was used (A1082050206, A1082050506). Thes 9-blade fans are still availabe for small money (A1102000323).
The more blades the louder.
- Visco clutch: A0002000422
There are many cheap reproductions available.
- Water pump: A1102001720
There are many cheap reproductions available.
- A/C pulley: A1292050410
Only necessary with A/C.
In my opinion, it's grossly overpriced.
...WRe