Yeah the original could easily be altered, add some inserts and way we go into Porno Land.
A close example of that porn sleaze it had would be Forced Entry with Harry Reems.
In many ways both covered the same territory. Actually, now i think about it, they are really really similar including wierd psycho finales.....and Lustig did indeed make/ was involved with porn back then too i assume in NYC.
Torture...Torture...It pleasures me...