PI swap

[smokedya2]

So I bought some heads off from ebay and the guy didnt know what they came off from. So I been doing some research on them today and found out they're 5.4 I have 4.6. I just wanna make sure they will work on my motor and will I be able to use the PI intake I have already from my 4.6

 

[duff daddy]

Major difference in the motors is deck height from the blocks, cylinder heads are identical, pi/pi npi/npi