I was seeing Niche and Namura (pretty sure they are the same) Big Bore kits for the DRZ on ebay for around $160 to $200 which is pretty cheap, but then I found some kits for the LTZ400 for $100!!! http://www.ebay.com/itm/BIG-BORE-CYLINDER-PISTON-GASKET-TOP-END-KIT-FOR-SUZUKI-LTZ-400-434cc-2003-2013-/253044961015?epid=25005340786&hash=item3aeaa7aef7:g:uEMAAOSwxxdZaIN9&vxp=mtr Are the cylinders interchangeable? Do you guys think is the same compression ratio than the DRZ? I have zero knowledge about the LTZ. I already have a FCR 39 from a YFZ450, looking for a BBK and stage 2 hotcams for my next upgrade.