Vy auto engine into vt manual help

[VS-S-PACK]

Hey guys, im currently rebuilding an auto vy 3.8 (2003) engine with only 120,000km on it and i want to put it in my Vt manual with the getrag, is the sump difference an issue? or do i put my vt sump on the vy engine?

I know i need to change the loom ect but is there anything else i should know? and would there be any power gains? ( cars engine has 284xxxkm but still goes good )