Replying to Replacement for Salomon ghost - s/pro 120

I’ve got some ghosts which are pretty old now but I love the fit and was gutted when the model was discontinued. I need some new boots and was looking at the s/pro 120. The last is the same apparently (100) and I’ve found a great deal online. As the shops are all closed due to corona (inb4 see a boot fitter), I’m planning on getting them, doing a shell check and just returning them if they’re way off. Was just wondering if anybody has gone from ghosts to s/pro 120s and if they have a similar fit