Things have been a little rocky around the Robinson house for the last month so progress has been stalled. I did get back into the garage some this week and made some progress.
LS7 Lifters soaking up some oil,

Lifters and LS2 trays installed, and finally decided to upgrade to head studs after ordering the wrong head bolts.

I put the rest of the motor back together last night, but I don't have any pictures yet. Tonight I'm going to check pushrod length and tidy up a few more loose ends. Should be ready to attempt to start soon. Hopefully I did my wiring right!