Thanks for the info. I am pulling the ol' 5 gear very soon and installing the SBC and the NV5600. I think I will just go ahead and drain the transfer and NV4500 before I remove them. I couldn't find a rental trans jack anywhere in this town, so it is off to Harbor Freight to get a BIG one. I was quoted the cost of having this beast installed was $900, with driveline mods included (about $250 of the total). $650 sure seems like a lit of $$ to R&R a trans/clutch when I have ALL the parts including the oil...