either buy a crate engine and just drop it in - probably as cheap, but here's a quick run down of new stuff you will need...
Crank
Rods
Pistons
Bearings
Machine work - budget $1000 for this
Heads
Cam
Intake
Throttle body
MAF
Injectors
255lph fuel pump
AFPR
Fuel pressure indicator
engine mounts (yours are probably shot)
oil pump needs to be replaced
all new gaskets
all new ARP fasteners
oil pan (can get by with stock)
clutch - need new one to handle the power
radiator/electric fan/3G alt - need better cooling for 347 than stock 302
There - that should get you started - you don't *need* all of this stuff (I assume you are starting with everything stock) but you don't put in a 347 with stock HCI etc etc