Something I need to do also.
First, the disassemble reassemble section in the maintenance manual is your best asset.
You will need Torx #8 and #5 to remove screws and loosen set screws. You will need a small spanner wrench (I use needle nose pliers acceptably)
for the ring nuts on the antenna, switch and knob. there is a clip to hold the PA module to the case, that pry's off easy enough.
I recall you lift the backside at the bottom and slide down til it clears the case then disconnect the front KB/display ribbon.
If your replacement has the side buttons, you can leave those.
remove the display/KB and put that into the replacement (if needed)
Reassemble in reverse order.
Make sure ribbons are well seated and locked, use care not to tear or kink them.
That is most of it, no need to over-tighten anything, just good and snug will work.
Fresh heat sink compound on the PA module and case is a good idea, then seat the clip.
I will be doing mine in a few days when I get the replacement front, so if I left anything out, I will follow up.
73s
First time may not seem that easy, but I have done lots, so a piece of cake.