The bullet has been bitten!
Bought myself a machine that can swage hose fittings and exhaust/tube up to 3".

Stocking fittings is a nightmare, there are so many! I've gone for 1/4" to 3/4" hose 1 and 2 wire with male, female straight and 90 degree BSP fittings.
Got some banjo fittings as well plus assorted BSP adaptors. I will see how demand goes for NPT, JIC and metic.
[blatant advert] If anyone is stuck for a hose let me know. [/blatant advert]