Hi night
Good luck for your assesment !!
The 737-800 uses the CFM 56-7B Engine
As for the Jepp plates the copies they send out are crap but you need to find a flying school who have a copy and you can photocopy them. I looked online and coundlt find any i could download.
Somewhere in this thread are some notes from me as well as others referring to possible questions. There is a great book i used and others have recommended as well. Its called "Ace the Technical interview" by G Bristow. I found it very very helpful to brush up on my tech stuff that id forgotten since finishing my licence.
If you cant find any of the questions drop me a line and i will dig them out for you.
Whizz