Make A4WD1 wheel base wider?

Hi all!

I just want to extend my Lynxmotion A4WD1 base with a special “Flipper arm”, like for example here:

Todo this in an easy way I need to make some space between the wheels and a robot itself, but I was not able to find sutable hex wheel extenders, they all seems smaller… are there anyone who can help?

Thank you in advance!

The design of the A4WD1 does not really accommodate for this - so whatever you do it will need quite a bit of customization.