expect to upgrade to a high flow waterpump
upgrade to an aluminum radiator
you'll want good heads for a 347... 302 parts make 302 power
same for intake, TB and Cam (you'll need much more cam than your 302 unless your going with some very large cross sectioned heads)
you'll need to upgrade the fuel pump and run 30lb injectors or so (for N/A) and don't forget that new MAF to match them
you'll need 28 ounce balancer and flywheel
rocknbronco- stroker kits will include a good "eagle, scat, or probe" crank rods and pistons..
might want to consider a 7 quart pan at this level of investment
and finally you'll have to have a dyno tune, no way around it at this point, the stock computer can deal with alot of modification so long as you keep the cid stock.
and build yourself a little oops money... you'll need it