I have alot of experience with intake runner lengths and such on 600cc motorcycle engine and know most of the general theory behind runner lengths. But here is my question. Would it be possible to take a GS-R dual runner length intake manifold and cut the cylinder head flange and about a inch of runners off and then weld on a d-series flange and bolt it in an EF with a D16? This would give a d-series a dual runner length manifold.