This has been a hot topic lately. Many many thanks to Alan H. (SVT_Alan) and Jojomofo21 for helping me with the info on this install. Alan posted a how to up on Facebook and he sent it to me since I am not on groups. This whole thing can be done for well under $500 and depending on what...
I love my 14" Brembos. I have the radial mount calipers. Can damn near put my face through the steering wheel when I stomp on them hard enough. They changed the pedal feel very slightly but I got used to it after a few drives. Much easier to modulate the brakes now.
Only problem with the larger brembos is wheel selection is very limited. You must have 18s with the 14" kits. I have AFS 18s and they barely clear. I have mounted saleen reps and they will require a small spacer on the front.