Ok guys, tryin to finish a k24 build and i need to know about the 09 TSX head. Is this the same as the k20a2 (type-s) head? the head is stamped "R40-3" but looks as though only vtec lobes on the intake side. Also has a weird ass exhaust 4 bolt casting going on. Help me ID this head. k24a2??? same as type -s? single side vtec?? let me know thanks, serached for "r40-3" no results.