I didn't really understand what you were asking me
although I think I understand the concept. I'm
assumed all connections are standard etc. and I
don't think they're be a problem about fitting.

Here's all the additional wiring that isn't attached to
the PSU and the power cord.

http://i66.tinypic.com/rtgojm.jpg

http://i63.tinypic.com/j9o58o.jpg

http://i63.tinypic.com/f3s0g6.jpg

http://i63.tinypic.com/33wqo04.jpg

http://i65.tinypic.com/9vaale.jpg

http://i67.tinypic.com/2wem540.jpg

http://i67.tinypic.com/2uha3bq.jpg

http://i64.tinypic.com/359bvgw.jpg

I did open the 780 and I test fitted the PWR1 cable
but I have no idea what the other two square connectors
go to? I looked for anything like them on the motherboard
and the HD and optical drive and couldn't find anything
close to them.

I realized later I had the PSU backwards but I don't think
it matters much.

http://i65.tinypic.com/2vsmdyo.jpg

http://i63.tinypic.com/rk5474.jpg

Robert