well I'm totally green with this form of tuning/ecm adjustment. I don't know what a mask is yet. I was meaning what ecm part numbers would work in my truck 94 k2500 4x4 4l60e? I think I may have...

this many have been covered in another thread but I couldn't find it in the stickys. is there an ecm compatibility chart? my ecm is service no.16197427 bjlh the second sticker is 16198135
thanks