As i seen numerous websites & forums mostly in the US and around the world this beginner honda tuners play hard with this type of engine even vtec or non vtec engine flawlessly, if not mistaken this single cam vtec and campro engine they use similar piston size 75mm, this engine is cheap too compare to b16a bad ass, so if any d.series tuners out there can share any information and picture for us to share cheers:proud: