Shane,
Thanks for the feed back. The other day I spoke to one of my friends that worked at a speed shop that has done a few RB swaps. His feedback backups what you said. He said that they went with the Mckinney's solution. His comment about Castlemaine's kit was that flat metal would not hold up well to the torque that the RB30/26 combo would be putting to the car. He also said that a modified stock transmission carrier from a Z32 or R32/33 was best suited for the S30. I will go with his recommendation since he has done several RB swaps in S30s. Oh and he said he would give me a hand with the install. Can't refuse free help!