My dad went LSx and tore down his perfect running 400 for parts and i purchased them from him.  I now am selling the remaining 400 assembly that i don't need. 

400ci Crankshaft with original balancer and flex plate.

Set of 8 TRW L2311 .030 dome top Pistons with 400ci rods, ARP studs, and wrist pins included.   used but in good shape 

The crank journals could have a light polish however the parts are all in good working order.

$500 for the whole package.

Possible trades for parts. 

I need 350ci .040 over pistons -dome top around 120 preferred-, and sbc hydraulic flat tappet lifters.