RobertWhitehead

Something like this: https://bikehub.co.za/classifieds/item/hardtail-mountain-bike-frames/600965/titanium-mtb-frame-fork Saw this ad for the first time pre-COVID and the price has remained the same since the first time it was listed

Use an 11 speed cassette

I believe a normal BB tool will work

Is it a round one?

https://bikehub.co.za/classifieds/item/hardtail-mountain-bikes/792756/merida-mountain-bike-m

https://bikehub.co.za/classifieds/item/dual-suspension-bikes/792032/trek-fuel-ex this looks to me like a great deal. I also have some on offer but this one will be better than what I can offer

SRAM and Shimano does have different distances per click on the cable but I am sure you'll be able to get it close to working 100%

Yes, the rails can creak

It will work yes, no need to upgrade everything. Just set the L screw to ensure the chain doesn't drop between the cassette and spokes

I do have a few options but what size do you need so that I can get one or two options

I am in PTA East and do have some stock

If you can get a set of 26er wheels I can provide the rest

Take some photos and send it on, I will be able to tell

You'll be better off getting a 26er

I do have some forks yes. Tapered or straight steerer?