Hi Bob,
People have tried different injectors, but in reality, they don't make a big difference due to the fuel delivery being metered by the metering unit, not the injector.
You will notice a big difference with good standard injectors,(fit new 'o' rings while your at it).
You may be able to get the pipes made at a hydraulic specialist, probably best to trawl Fleabay for some good second hand ones.
Steve.