Well I know this is an old thread but...I had fitment issues with my AWR at 1st...flange that mates up to the block was not straight and caused an exhaust leak. The EGR tube was also in the wrong place.
I never had the problem of the runners being too long and hitting the fans. I did have to remove the fans for better ease of install 4 bolts and 2 elec plugs.
The block flange needed to be milled...and the EGR moved to a different position.
I took measurements and drew a diagram of what was wrong and how to fix it. I called them and they said to send the header back. They fixed it to perfection and sent it right back.
Im going to put this in caps just because its important. CALL AWR AND THEY WILL FIX IT. They are a good co. and they fixed mine for free!!!! They should do the same for everyone.
Jeremy D