Anything is possible with a torch and a welder. However the standard cab sb S-10 frame under an AD would put the rear wheels really far forward (about 8"). You would be better off extending the S-10 frame if that is your starting point. The 3 wheel base lengths of an S-10 are 108.3, 117.9, and 122.9 or 2750, 2995mm, and 3120mm respectively

The problems we face today can not be addressed at the same level of intelligence we were at when we created them - Albert Einstein Or with the same level of $ - Me