Eagle have no rods for any RB but we have sent an RB rod over and they will be on the market soon.
All RB 25-26 rods are the same but some RB 25s have weaker rods but a lot have GTR rods,the motor with weak rods has a few other things that make them the dog of the family.
Rb26s have a longer stroke but the rod is the same size as the 25
the piston on the 26 is shorter, Fact. I garranty this is true as we do a lot of Skylines.
Crower have rods for RB25-26s out now.