FE133 may exist but it may not be made by freescale/motorola. How compatible it is I don't know.
I have here state-of-art PDF documentation on 680xx & PPC processors but their are not made by Freescale/motorola.
When I say state-of-the-art its something like this if I remember correctly,but not sure how compatible it is.
450Mhz PPC with built-in 2Mb L2 cache (possible drop-in replacement for 604E) (same ball count) signals all in the same place,but any unused pins on the 604E are now used on the new Processor.
Can't remember what has change in the 68k series will have to take another look at PDF,but all Processor are classed as "Enhanced" and I do believe all have same pin count,but as stated above some of the unused pins on old processor are now used.