If SGS ones have wrong type fitting then what they sent is not n14 or rnn14 correct as they all use same part .
I've used Kilan before and had a late n14 lx I stripped for few panels, door seals, switches, motors etc etc and rear trunk struts too as in good order .
£40 each getting bit pricey but if quality strut and proper fit I could live with it although the n14 lx breaker was pretty much that price for whole car ...
On a break having my iced green tea so used company computer look at manufacturers based on oem part number.
Triscan do them and seem have brackets included too and not expensive .
Triscan p/n 871014218 Kilen p/n 442033 - Nissan p/n 9045150C00 (left)
Triscan p/n 871014217 Kilen p/n 442032 - Nissan p/n 9045050C00 (right)