motor swap

Hey everybody, i have a 95 k1500 with a 350 TBI and its got about 235000 miles on it and i know here soon im gonna want to replace the motor. I would like to swap the tbi out for a 96 and up newer vortec 5.7 motor but im not sure about how hard or how much i would have to change to make it fit. I have a 4l60 10 bolt tranny and 3.73 gears. Would a newer style motor bolt up to that tranny? And what else would i have to consider doing to make it work, thanks