I have a 2006 Mazda 3 with rusty rear wheel arches. My local wrecking yard just got in an '09 which has very slight differences in terms of the placement of the gas cover etc. My question is, if I cut out the wheel arches and inner wheel wells, below the gas filler door would the lower panels (wheel arches) conform to the '06 well enough to tig them in?

Thanks.