Hmmm,.. Very Nice !!,..
As I too have owned one of those 'Original' Honker II bodies for many years,.. something along similar lines might make for a fun build project, to finally give the Body/car some life and track time !!,..
Thanks for Another beautiful 'Build' and perhaps 'inspiration' !!,..
Also (and Without wishing to create any 'Thread Drift') as such,.. but Mainly due to the P68 / F3L being one of My All time Favourite and arguably 'Gorgeous' racing cars !!
With regard to:-
Because the original was a Le Mans prototype called P68 or F3L that was not raced and was converted to a Can Am racer later by Holman & Moody without success!
May it be 'suggested', that if Anything,.. it would have been the Other way around, due to the Different Years of 'Appearance', the 'Honker II' (Designed in the latter half of 1966), pre Dating the P68 by at least a Year !!
As to the cars actually being the Same, or 'Derivatives' as such,.. I would perhaps suggest, the 'Inherent Similarity', is realistically More of merely a 'Family' Resemblance of Design 'Style' over that 'Period' by the Aero-Dynamicist, Len Bailey, as can also be seen even in his slightly later designs of the Mirage and the Open Sports Ford.
They Were Separate and individual Design Projects and Budgets (arguably Inadequately Small even at the time !!) I guess it could perhaps be argued that the Honker Served as a 'Base' or basis leading to the P68 ?? There Do seem to be some inherent differences
All the cars were 'Built' by Alan Mann Racing in England, with Holman & Moody providing (in the case of the Honker, the Powerplant and US Race team Crew & support etc).
It IS worth Noting that the P68 / F3L DID race on quite a number of occasions, (although perhaps sadly without any great success).
See here:- https://en.wikipedia.org/wiki/Ford_P68
Cheers