how can you tell

hi guy just want to no how you can tell from a mk1 s1 to a mk1 s2

The rear lights for 1, s1 has smaller lights same size as cabrio if tin top. 

Steering wheel, have wolfsburg wheels in them and also the dash is different. Some come with small metal
Bumpers too. 

There's a few differences more but they're the main in your face ones.