After a long email conversation with an Engineer at Misumi, I ended up getting LMU8 G6 Linear Bearings and SFJ8 h6 Linear shafts.
I struggled because it seems everyone is getting the LMU-N8 and PSFU8 rods as mentioned by other people an they are working. I'm no expert but after talking to the Engineer he said the LMU-N8 Linear Bearings are an G6 tolerance and the PSFU8 rods are an h5 tolerance according to iso standings. He said they would work but "Our linear bushings can work with an h5 shaft. However, there will be some that are too tight to the nominal value, so that the bushing will not slide on the shaft properly."
LMU-8 is with a seal and LMU-N8 is without the seal. I'm not sure how the seal will affect the linear motion, but my environment could be prone to dust so I wanted the Linear bearing sealed. I figured I would trust the engineer and give it a try, if the linear motion isn't as smooth and quiet as the original Linear bearing and rod, I can just use the LMU-8 Linear Bearing and order a PSFU8 rod and bite the cost of the rods. I also never got any firm confirmation from any source on the correct Linear Shafts sizes, so Im praying my research is correct sizes. I'm supposed to get my Prusa on 2/21 and will probably build it on 2/25, so ill let the forum know how it goes.
So my complete order was
12 x LMU-8 Linear bearings
2 x SFJ8-320 Linear Shaft
2 x SFJ8-370 Linear Shaft
2 x SFJ8-330 Linear Shaft
About $140 US.
For reference Lowercase letters are for shafts (h5) while uppercase for holes (G6).