Back with a few new bits.
First some work on the front end with styrene rod added to fake the real tubular structure, some ducting and the beginnings of a radiator.
Below top left, are enhanced engine cover latches; top right, S27 PE trimtabs with added bolt heads; bottom left, braces for trimtabs (building these was like milking the proverbial mouse); and bottom right, rear shocks with spring. I'm leaving the front springs OOB as I suspect they won't be visible on the completed model (just call me a lazy superdetailler

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Finally the rear end with a cradle for the spare tyre, now with tread pattern also an arm for holding the engine cover in the open position. The latter is built from steel rod and styrene bits and if all goes according to plan will fit into a bracket on the cover rather than the lump of blue tack.