trans keeps blowing up........

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i dont know if this is the right place to post this. if it should be posted somewhere else please let me know..thanx

could anyone offer some advice or info on this idea ????????
i have a 1993 silverado K1500 4x4 ext. cab. and have had the trans (4l60e) rebuilt 3 times in one year by three different people including myself and it keeps blowing up, so i wanna change this truck to a manual trans. i have a donor truck 1991 4x4 chevy short with 4 speed w/overdrive. my question is can this swap be done and what is the complication level. i am a 25 year experiened mech. also i dont know what trans is in this truck , have not looked yet, but i have the computer and pedals. a complete donor truck.........thanx