Err. the Decs Tachometer from Apexi is just a Rev Meter lah..
Oil pressure and other temp sensor, you can opt for gauge holders that are either made from fibre/carbon/plastic, or you can use Defi's single DIN meter which has fuel pressure, water temp and oil temp.
Opps...
I see you are talking about the new model..
never knew about integrated sensors, but I think apexi sells them. try email them and ask.
http://www.apexi-usa.com/product_electronics_detail.asp?id=219&pageNum=1
if they expect you to use 3rd party sensors, then this is the site for it.
http://www.racetechdirect.com/