GT6 serial numbers

["Theis, Karl J" <karl.j.theis@lmco.com>]

It is my understanding that serial #'s on our cars vary by a few hundred
from one component to another.
For example, my '67 GT6 is
        comm. #         KC6353L
        engine #        KC6869E
        body #  5940KC

However,  my '68 GT6 is 
        comm. #         KC11856LO
        engine #        KD11348E
        body #  21834KC

Anybody have an explanation for the (much) higher body number?  Did Triumph
really make an extra 10K GT6 bodies?  Just curious.
        Karl