Hey Sir Burned, I was thinking . The Z400 quad has been said to have the same top end as a DRZ.The new quad is a 450.On Suzuki's web site the bore / stroke of the new quad is 95.5 x 62.8 , and the DRZ has a 90 x 62.6 b/s . So.............will the cylinder/piston from the quad fit between the head and cases ???