As you may know, I am new to this thing, but I would like to work in higher resolutions.
I would like to ask you guys, if theres a bigger resolution of this image on the internet? beacause I cant seem to find it. Thanks

Use google's image search function - let's you search for identical/similar images.
As far as I know, there is no bigger version, just other angles, google images confirms this:
http://www.rspeed.org/forums/lounge/8248-rat-rod-s13.html

Yes, tried that, but same result. Thank you very much for your help anyway!