its pretty unlikely you can use the shims that are already in there. i did that at first with the carrier shims, there was absolutely no backlash and the gear wouldnt turn was locked tight, and the original shims are one piece on each side so you cant adjust them. as for the pinion idk i used MHD on FRPP gears but you will need a different sized shim because its unlikely the 2 gears will be the same thickness, but with a motive gear you wont be able to use MHD.
you could do it by installing it and doing the dye test then correcting it, but that would require alot of work.