I have a couple of questions
 

First, Wat bit/tap do i need to redrill my exhaust manifold?

Second Do i need the metal covers that came off the oOEM motor mounts if im using MMR solid mounts, i dont see how they would mount.

Thanks in advance, i'll have more questions probably.

10mm is the recommended size stud/bolt to use compared to the old standard of 8mm.

You still need the brackets that bolt to the OEM motor mounts, the rubber/metal bonder part is not needed though.

okay so all i need are the brackets that hold it to my motor but not those square covers with the slots in it? What bit tap do i use for the 10mm bolts? Also, is ACE where you get them or is somewhere else the preferred choice?

ACE is fine, you want a 10mm tap, it will say what drill to use on the box or on the tap itself.