Hello, I'm relatively inexperienced tuning EFI. I'm starting to mess around with Tunerpro and PCM Hammer. I'm currently working on LS swapping a 2000 S10. I already have the 6.0 with LS3 heads, L96 intake, 4l60E, and a 0411 PCM. It has a return style fuel system, no EGR, and a cable throttle body. Any recommendations on what OS I should use for this setup?