Need a suggestion on some Bodywork Tools

may i ask a question has anybody tried to tie in two compressor together. i have one old craftsman not sure of hp or cfm and a newer HF 20 gal was thinking about building a 6" by about 4' header out of pipe and hook both compressors it turn both units on and come of the header with one air line. not sure it will work but i would like to try.