looking to buy a dp motorsport engine with hks forged rebuild done 3 year ago with 5000 miles done when on the phone to the guy he said that someone had been to look at it but could not see hks on the gasket and took the sump off to look at the pistons as someone said there should be hks wrote on the underside of the piston but left as there wasn't just wanting to know if this is true cheers