Oh your not interfering at all. Trust me I was worried it wouldn't be compatible at all which is why I tore it down. the only thing I might not be able to use is the timing cover but since I don't have any accessories anyways that's really a moot point(Have yet to buy an alternator, starter or power-steering pump) I think very little has actually been done to the 2009+ heads other then maybe shaving them for a smaller combustion chamber as the 2010 pistons have a significantly smaller raised area then the 2008. also the 2008 has a compression ratio of 9.6:1 versus the 2010 at 10.5:1