Custom Titanium Bike – Fork options

Hi all,

Looking for some advice / suggestions surrounding a new frameset and possible for options. Any advice would be greatly appreciated.

I have a choice of 2 forks:

1. 32c clearance

2. 40c clearance

Images attached.

I am hoping for the 40c clearance fork however I was told the length, rake etc are slightly different across both. What would the difference/ consequences of going with one vs the other? I would be happy with either if it came down to it but not sure as to the effects of each on the handling, fit etc.

Thanks in advance.