Ok can the heads on a 3.5 fi on a 2.7? Are the throttle bodys the same on both engines? Now that is said I am rebuilding a 2.7 is there anything that can be done to better the oil pressure in this engine? The heads on this engine are ready to go just waiting on the block to come back from SRS but any info with this engine or helpful hints would be great thank you. Oh yea I am not trying to beef up the 2.7 I was wondering about the heads and throttle body since they are a lot alike build wise.