My 2005 base coupe is due for new brakes (36k miles). Can anyone tell me definitively whether or not the optional Z-51 cross drilled rotors just bolt on in place of the standard smaller rotors? 3 Chevy dealers tell me that the calipers are the same and they THINK the rotors will interchange with no problem, but they have no information in their systems to confirm that (imagine). However, I see Zip and others offering high performance rotors that don't fit Z-51 cars so what is the deal? I would really appreciate some help. Thanks in advance!:confused:

My 2005 base coupe is due for new brakes (36k miles). Can anyone tell me definitively whether or not the optional Z-51 cross drilled rotors just bolt on in place of the standard smaller rotors? 3 Chevy dealers tell me that the calipers are the same and they THINK the rotors will interchange with no problem, but they have no information in their systems to confirm that (imagine). However, I see Zip and others offering high performance rotors that don't fit Z-51 cars so what is the deal? I would really appreciate some help. Thanks in advance!:confused:

I remember reading a post somewheres about this and I'm near certain you can use the Z51 rotors, you might want to upgrade to different pads. I'm just quoting what I recall - hope this helps!:p

I am another person who is not going to give you a definitive answer but I think you can use the Z51 rotors but you need to buy a bracket that moves the calipers out a little further because the Z-51 rotors are larger.

I just found this:
Suspension choices
Three suspension choices allow drivers to choose the setup that best suits their style of driving. Each of the choices (Corvette Standard, Magnetic Selective Ride Control, and Z51 Performance Package) provides outstanding handling, but each also offers drivers the ability to tailor the car’s handling traits to specific preferences.

The Standard suspension is tuned for a balance of ride comfort and precise handling. The optional F55 Magnetic Selective Ride Control suspension adds to the Standard suspension magneto-rheological dampers that are able to detect road surfaces and adjust the damping rates to those surfaces almost instantly for optimal ride and body control.

The optional Z51 Performance Package is a competition-ready system for the true performance enthusiast. It offers more aggressive dampers and springs, larger stabilizer bars, Goodyear Supercar tires with an asymmetrical tread pattern, and larger, cross-drilled brake rotors for outstanding handling performance that is still comfortable for daily driving. Beyond the suspension bits, the Z51 is a total system that takes the “regular” C6 to near-exotic levels of performance. It features gear ratios borrowed from the previous Corvette Z06 for maximum acceleration performance, and includes coolers added for the transmission and power steering systems for aggressive, track-oriented use. The result is a car that very nearly equals the Z06 in track performance – representing a tremendous value.
http://www.corvetteactioncenter.com/specs/c6/2005/2005press4.html

The fact that it says larger rotors tells us that they must use a bracket to move the caliper away from the rotor further. I think I remember reading about these somewhere. I have chosen to go with the powerslot slotted rotors for my 2005 C6, this is the easiest way to go in my opinion.