Can the 5.4 short block be transplanted into our cars while keeping the 4.6 heads, intake and so on? It seems like it would be an easy and cheap way to gain some cubes. I know there doesn't seem to be an advantage in swapping in the whole motor at this point, as the 4.6 and F-150 5.4 make the same hp. So the 4.6 has been tuned to run, more so than the 5.4. However, if the 5.4 short block could be swapped in, that would give us more cubes and torque if nothing else.