which kit ...smc made a couple
pump in bottle or progressive?
i really cant see why if you just took it off you would even need instructions especially to go on an impalla twin, any instructs i can post are for install in a GN
if its pump in a bottle simple
mount the bottle wherever you can , drill a hole for nozzle(you should need two) in up pipe before throttle body , run a hose from bottle to nozzle(s) , run wire harness from bottle to inside car and connect to box, run vac line to box (tee to boost gauge) , connect red to power and black to ground ,
put denatured alky and a cap of lube in the bottle
then go blow it up as i really dont see an smc doing much for a twin SBC unless the turbos are really really small
edit..
i posted instructs a while ago , a search would have brought them up
http://www.turbobuick.com/forums/general-turbo-buick-tech/266574-smc-kit.html