chodder

Hello I have just been to DLT to ask about modification on a motorcycle, I was completely turned down by the head of the DLT in Sakon Nakhon, I have an engine with a written receipt/invoice, I am going to purchase a rolling chassis with a green book to put the engine in, I need to know how do I go on about engine modification/change to complete the registration at DLT? Please help me with this process much appreciated

Hi all I need a contact for crank re-builds they need to be extremely accurate as they're for a race engine, quite complicated to do as there is no spline in the centre when press the two cranks together, can anyone point me in the right direction? many thanks