Can't thank Deano enough, the arches came this morning, before I had time to let the boss know there will be a parcel coming later in the week.. Also it took me half a hour to get into the parcel, very well packed and no damages that I know of hehe..
What was in the box was 1 rear arch and 1 front arch, I went straight to the front one and got thinking, it's about 1in wider than the back one with similar wheel well shape, check this out....

And this...

So then I swung the grinder at the old arch and trimmed the front one down..

And this...

I think I'll continue with the front arch cause I'm a bit crazy with this stuff , I'll graft the inner arch to match