I need assistance identifying the correct calipers for my G35 sport (07 model). I believe the ebay seller has his calipers labeled incorrectly. which of these two pics are sport calipers. I believe it's the 2nd one with 4 pistons?

4 pistons total vs 4 pistons each. they fake aint no such thing spot calper for 07

First of all, are we only talking about front calipers here?
Is this supposed to be the front calipers from two different vehicles (one that is Sport, one that is non-Sport), or is this supposed to be a complete set from one vehicle (all four corners)?

Assuming you have the '07 G35 Sport Sedan, then the correct front caliper will be a floating type mono-piston caliper (like the first pic). There was NEVER any 4 piston Sport caliper on an '07 sedan. I'm 99% sure the same is true for the coupe too. Additionally, that second pic is a dual piston caliper, NOT a 4 piston caliper!

Not having had them myself (I have an '07 Sport), if that is a complete brake set (4 corners), then it looks like it may be a non-sport set, with the dual pistons being the fronts, and the mono pistons being the rears. However, if it is only the fronts from a Sport along with the fronts from a non-Sport, then the mono piston will be the Sport set, and the dual piston will be the non-Sport set.

This has been the source of much confusion in the past.
https://g35driver.com/forums/brakes/...ke-system.html

Exactly what he said ^^

thanks. that clears it up