well the reason why we dont sell 2JZ mount kits is:

1) the mounts are NOT THE HARDEST PART OF THE WAP
2) it took alot of R&D to get the motor to sit they way we wanted
3) My phone (an tracys) rings enough already. YOu sell MOUNT kits, and people will be calling saying "why dont they fit, i cant get them to work, ok the motor is mounted but i cant wire it, the driveshaft is not fitting, where do i get one made, the shifter isnt where i like it" blahblahblah.
4) why should i sell my hard earned R&Ded mounts to someone so they can copy them an sell them to XS POWER.

People think if there is a MOUNT kit offered, its as easy as an SR20 swap, or a B16 swap in a civic. IMO if your offering a service like this, its not for the average person. thats why i keep it in house, plus, it keeps demand up. YOUR the only one that can do it.