Daft question number 1 - Arches

[BoSelecta]

Hi all - new to the scene so forgive my ignorance.

I was wondering what the difference is between these 2 types of arches and how you could go about converting the former to the latter (if possible):

Painted arches to match over all body work colour:



What seems to be 'standard' black textured arches in plastic:



Thanks!

[Mk2_tel]

Pic one is part of the shell

Pic two are plastic clip on so to speak

Small bumper is big pic one and pic two is
Classed as big bumper

[Thom89]

As above, first pic looks like the arches have been "pulled" this is metal work to the body, and involves welding, filling and painting

The 2nd pic shows a G60 Golf, with its correct factory fit wheel arch extensions

Thom