+1.
Its physics man, the RB motor is a really great motor…its revs higher, twin turbo, nice power and torque, but comparing the block itself to a 2jz, displacement wins…
ppl need to stop looking at the cars and look at the motors themselves. The 2jz just has more potential, and if you are putting it into a silvia chassis, the 2jz is the best bang for buck compared to the RB.
If I had to say what you are using it for, it seems like you are looking at making a lot of power, and if thats the case, I would scrap both motors and grab a v8 LS-series motor. American blocks are the shit when it comes to making power straight up.
GL in your choice man.