There is another „Lightweight“ on the German website „mobile.de“ and yes quite expensive:
https://suchen.mobile.de/fahrzeuge/details.html?id=247093314&ambitCountry=DE&damageUnrepaired=NO_DAMAGE_UNREPAIRED&export=NO_EXPORT&isSearchRequest=true&makeModelVariant1.makeId=6200&pageNumber=1&scopeId=C&sortOption.sortBy=searchNetGrossPrice&sortOption.sortOrder=DESCENDING However this car is equipped with all features a “Lightweight” should have. (incl. very, very old Pirelli P7 tyres :-) )
“Should have” in a general term.
I have meanwhile learned, that in the end of the MkIV-production in the 90th customer could order all features they wanted and could get any mix of features.
As a consequence it seems that there are Lightweights with and without “AKL”-Chassis numbers.
There are Standard MkIVs with all the features of a Lightweight carrying an AK-number.
There are Lightweights with all features of an Standard-MkIV with exception of a flat dashboard carrying a AKL-number(like the US-car on ebay).
I’m the happy owner of two MkIVs.....both produced for the European (German) market.
AKL 1411 left the factory indeed with all lightweight-features,...and due to Emmission regulation with a 5.0 HO EFI-engine.
AK 1073 also left the factory with exact all the “should have”-lightweight-features however carrying an AK-chassis number.
So whatever you own for a MkIV, it is a fantastic car anyway.
I would not spend any extra-amount of money only to have an “AKL”-chassis-number in the engine bay.