The number to check for matching is the production number under the bolt handle to see if it matches the number at the right rear of the bolt slide. Lithgow SMLE rifles were always initially numbered on the front right of the receiver ring, right side of barrel, nose cap, under the rear sight, fore wood and buttstock. All numbers should match. Not too common to see this as many bolts were altered/replaced during maintenance. Cheers.
No mate, less likely to see the fore wood numbered though. The only real difference is that after 1939 bayonets were not match numbered to rifles, Cheers.