my lil 6.1 died at the 1000ft mark at the track

The Rod looks blue to me. That means it ran out of oil.

Can you post some pics of the main bearing bores for us?

Also, did you verify the crank is cross drilled? If it is, can you take a thin screw driver and and stick it from the Rod bearing feed to the main journal? That will show how they did the cross drill, if they did cross drill it.