Modifying a HB 1/8 diff to use 3.3 sliders

[suicideneil]

This is one of those things that occasionally gets discussed but not in any kind of detail, so I thought it would be nice if we could thrash out a 'how to' for future reference.

So far as I understand, you just need to remove the output shafts that have the cups built into them (?), and replace them with the 3.3 stub axles (with the threaded portion cut-off). The only thing Im not 100% clear on is how the larger spider gears then attach to the new out put shafts- is there a set-screw or pin of some kind that threads into the spider gear and hold the shaft in place? A picture would be great to illustrate, though I appreciate it does mean ripping apart a diff to get one (or two).

My reasoning for all of this is that I have noticed UE 6 spider diff cases are only $69.99 for two (?)- which is meant for using maxx diffs but ignore that bit, its the cases that are important here. If you then buy the HB 1/8 diffs that come with the needed bearings and pinions, all you have to do is combine the UE case & the HB diff to get the ultamite 'drop-in' diff upgrade for your E-maxx. Price wise it would work out at about $190 for a total truck, which is cheaper than a new UE 6 spider set, and cheaper than the FLM hybrid route too (buy about $10-15). I like this UE & HB diff idea since it means I wouldnt have to sell my existing FLM bulks in order to upgrade the diffs.

Any thoughts, tips & info on doing the shaft mod is most welcome.

EDIT:
These are the modified output shafts for the HB diff that Mike sells for the revo diff upgrade- I assume he might sell them seperately if I/someone asked nicely?....