Help identifying cap values.. Tannoy 1091 Crossovers

Hi all

I have a pair of Tannoy Canterbury 15's from about 1991, featuring the 1091 crossover. I'd like to update these crossovers with new capacitors. There seems to be much conflict around the values of caps used. I a recognize I am being a bit lazy here, and could cut / measure - but I would rather order new units before I cut the old ones out. I have started a basic layout drawing - see below. Hopefully I can complete this with some help and it might be of use to someone in the future.

1091 diagramV@.png

I need help identifying the values of C3:

And the stacked and single RIFA's



Any and all help greatly appreciated.. I cannot find any info on the RIFAs to find equivalents. Many thanks!