If you just want to experience the 'lifestyle' then try contracting - if you go permanent then your wages will definitely be cut. Pay rates for unlicenced mechanics are around £1000 a month and housing will generally not be provided by the company - housing costs are high, 1 bed flat goes for about £800 a month.
The subcontinent mechanics tend to just rent a room in a shared flat - not something I would recommend.
If you are still set on trying it out check out Line Up as they are recruiting direct for Bahrain and that has the cheapest accommodation costs.