Take it you are sure that is a crack peter and not a shadow created from your flash/light source?
You could be right old chap..!!
If you move your light source and the 'crack' disappears, I would call that a fairly cheap fix!
Nope 4 wheel alignment, stuck wastegate. Loads of little jobs done plus control arm has made it drive better than ever. Had a play with a F12 on way back
in Emblem I have found a proper good trustworthy lot who will get all my business from now on. Martin and Myles really are top notch!