I am stuck with this chop at the moment, any help would be much appreciated!

Base:
http://www.covercars.com/cars/pictures/high/140886.jpg

Chop:

can I see the bg pic?

Here you go.

nice brush so far, but rear wheels a bit has positive camber i think hehehe keep going

Yeah it did, I didn't notice that until I read your comment. Thanks!

Looks great, although one suggestion - the background appears to be shot with a super wide lens, whereas the car isn't. I'd recommend skewing the background so that the sides of the pic don't look so slanted, and are more vertical.

niice work brother! continue

yeah same here
the scene is nice, thats a given, lot of room for all kinds of creative reflections.
But the disparity in angles is really throwing me off
making the car seem distorted and out of place instead of the bg in its current state

Thanks everyone, here's a small update with the BG changed.

Another update, slowly getting there!