I have a D2 with twin LPG tanks in place of the petrol tank, at the moment the tanks are hard plumbed all the way up to the engine bay. My question is, does it have to be hard plumbed or could it be done in the rubber pipe used in the engine bay. The reason I ask is, I have to remove the tanks, and the way the pipes are routed they will almost definitely be damaged when I remove them.