70 340 valve covers???

I think the 70, 71's for sure have the heat shield on the pass side. The drivers side differs from 273/318, 340's have a taller wire seperator standoff due to the taller throttle bracket kickdown/linkage from the taller intake. As far as 6 pack that has been debated for a long time with no clear answer. The only difference seen on SOME original 6 pack engines is the driver side standoff is closer by a little 1/2" maybe to the intake side.