Would like to just for the hell of it start off with my stock tune adjust on my Suburban. It's a 95 with 454 and 4l80e. The stock chip is BPRK but due to it being in the stock memcal I don't know how to go about reading it without jury rigging some pins. I found another thread where EagleMark said originally it was BMHM, then BPRK and then CAJR. I however cant seem to find any of the bin files here or on the rest of internet. Ideas on getting the stock bin, or does anyone have it?