There was some disscussion on the locostbuilders.uk.co , and the general consensus was that unless you want to design and build an adapter then the camarro spindles were no good. I am pretty sure there is only 1 control arm, and the shock bolts directly to the knuckle
You can see in the picture where the shock bolts too, right above it there is a hole, The shock should go in there. i am pretty sure that the picture is a double wishbone suspension conversion.
when I searched for f camaro on google this is the only decent image that popped up
Although if there is a waill then there's a way.