I wouldn't do the 3rd with out the rest of the steel housing,  just a Sammy steel 3rd could be had for dirt cheap / free but then you still have the weak first Gen CV's.  Anvil looks nice but then you still need to do the bigger CV's and drive hubs.
 How much more does that bump up the cost? ÂÂ
Anvil, SOS CV's, and drive hubs...
   I'm guessing about $750 +  :-/  Ouch ÂÂ

And for T-case gears for about the cost of the Cal-mini kit I can do the OTT Kicker 3 and get high range reduction + low + sub low... But a serious Drive shaft mod will be necessary for the off set sammy case's compound angle.
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The sammy case will correct for 33's in Hi range... I can run my 34" Ltb's and use over drive....