You could always make your own buffers with filed down LEGO round studs or just pieces of round plastic, glue them onto the old tanker frames. 
Super, I've been and tried- the frames and tankers don't swap between old and new. The tabs that fit the tanker on are much too far apart on the newer variant. Shame, considering the buffers really lift the look.
Super, I've been and tried- the frames and tankers don't swap between old and new. The tabs that fit the tanker on are much too far apart on the newer variant. Shame, considering the buffers really lift the look.
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