Stock SiR axles will work. I gotmy swap with the S1 intermediate shaft and 90-93 teg axles. The axles were a tad long adn I even modified them like it was mentioned above. So I called up Marty at raxles.com and he built me brand new stage 1 hybrid axles. Just put them in today and they are sweet. But if your axles come in good condition I would just use them and not worry about the hybrid axles.