For the harmonic balancer I went with this:
https://www.summitracing.com/parts/r...make/chevrolet
For the distributor I went with this:
https://www.summitracing.com/parts/d...make/chevrolet
The DUI is expensive....but made here in America.
Here's an alternative on Ebay(It comes with wires):
http://www.ebay.com/itm/CHEVY-Inline...RXtR~4&vxp=mtr
Or you could just get a set of Napa Premium HEI wires for a 70's 292. They are a nice set and are 8 mm.