RButler

Im looking to buy my first subaru when i turn 17 and have got insurance quotes for a 2l impreza r hatch model its an 09 but im not in love with the interior, my step-dad has an 08 sti hatch and i am planning on taking the car on track and keeping it for a while does anyone know of any interior swaps that have been done on these and just how many parts transfer between the 2? im struggling to find any information on them i belive the stud patterns are different at 5 x 100 instead of 5 x 114 would sti sway bars and brakes swap over aswell or would i need to go aftermarket?

Thank you for an help in advance