The engine and gearbox came with a V5. The reg was something like K877 SCX. I cant remember the numbers, but it was definitely SCX.
SCX was a result for me Steve Cook

I could have had K877 SC X

With a careful fixing bolt i could have had K877 SEX

DVLA said I could not use the reg unless I could produce the old car. Doh! as Brian had binned it