Outer Limits 4x4 Board

Is there different front brakes, i.e. in size, for the GQ's between gas and diesel models ?
I have the RD28T with rear disc brakes and factory locker and want to upgrade the front brakes to hold up with the planned V8 conversion.

http://www.dba.com.au/2006/catalogue_aust.asp

try this link - CLick on the nissan link and opens a PDF of the catalogue