computerprogram and wiring harness

I am converting my 1995 GMC Sonoma from a 4cyl. to a LT1 engine from a 1993 camaro. I have a computer and a 700-R transmission. I need to know of
somewhere close by that I cam send or take the computer to have it re- programmed and a wiring harness made to run the transmission. I live in North Alabama. Thank you for any information U can provide.
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