im looking into this boost guage Awesome > VDO 30"-25PSI Boost Gauge what parts do i need to fit it? hoze of some sort?

You only need some vac hose and possibly some electrical connectors

If it's a mechanical gauge (i.e vacuum) then you need vacuum hose, a suitable tee piece and whatever is needed to hook up electrically (lighting). If it's an electrical gauge you will need a sensor (transducer) and associated wiring.