John,

Do you have any pics of your rear liners after shaping with the heat gun? I've done the GT2 bracket and drilled, did a little re-shaping, just curious what areas you focused on since I don't have the huge tires yet.

 

There is really not much visible shaping. I bolt the liner in place and then press it as far back as possible to create as much room between the tire and the liner down by the IC hose. I them mark where I need to drill the hole in the side of the liner so I can bolt it to the GT2 bracket. If you still need to create more room in some spots, you can attack it with a heat gun.