Stock Caliper question

[Toxic]

About to put stock resealed calipers back on my track car. Dumb question of the day:

Is there a difference between the front and back caliper? If so, how can you id them?

I know the bleeders go up, orientation and such. Just trying not to do something stupid here.

Thanks in advance

[AZTVR]

2008 parts list (http://www.roeracing.com/productcart/pc/Original-Equipment-Parts-d7.htm)shows 38 & 42 mm pistons on the rear, and 40 & 44 mm pistons on the fronts.

[Steve M]

Piston size will be the difference as indicated above...the calipers are physically the same size, but the pistons are not.

[Toxic]

Thank you fellas