This is a tricky one. I'd say it falls into the "non-specific reference" category, making if equivalent to "whichever/whatever" Example: whichever traducción Ingles - Espanol : whichever a pron 1 (=no matter which) whichever of the methods you choose cualquiera de los métodos que escojas, ...
diccionario.reverso.net/ingles-espanol/whichever - Similares. Brian Steel gives an example in his book <<Translation from Spanish: An Introductory Course>> published by Sociedad General Española de Librería, including: Dame el aparato o como se llame (Give me the mahine or whatever you call it). The "que tengas" ("que" also often precipitates the use of the subjunctive) is the rough equivalent of "lo qur haya" or "lo que sea". I hope this helps!