first understand that the stock FE intake is cast iron and weighs in at about 100lbs, thus you might need either a second person, or an engine hoist, to pull the intake off the engine. otherwise it is basically an intake swap on just about any other engine. a few issues though;
1: the valve covers also bolt to the intake as well as the head so you have to remove those.
2: where the intake meets the head you have to deal with several sealing surfaces at the same time, so be careful lining up the intake and make sure the valve cover rail lines up properly between the intake and the head otherwise you will have a leak there. and that is all four corners by the way.