Rockshox Reba or similar 27.5 straight steerer

Looking for some Reba forks (or something similar) to try on my Surly 1×1 as the current rigid forks are starting to show their age a bit

27.5 wheels

straight steerer

currently have 100mm skewers but not so much an issue as have end caps for my wheels so can be adjusted to suit

anyone have any going spare?

my username at outlook dot com

thanks in advance