Potential Drivetrain Issues With 4g64

[v8klla]

I currently have all of the parts for my motor, along with all of the supporting mods such as turbo/fmic/fuel etc. I have not, however, touched the drivetrain besides the flywheel and clutch.

To get an idea I will be running an ACT 2900 with the 6 puck disk and making somewhere upwards of 500 whp on race gas. No holding back on this motor...

So basically what I am looking for is what parts I should upgrade ASAP in the AWD drivetrain. I have heard something about the center differential from Jet, and I am familiar with upgrades in the transmission itself. Is it possible to weld the center differential, and if so what are the downsides to this approach? Also I am very unclear about the whole viscous coupler and it's function. Should I have it welded and run it welded or only use the welded viscous on the dyno? Anything else I should be worried about?

Thanks!

Chris Carey