How to change spark plugs on 2008 impala ss 5.3l on 2006 Chevrolet Impala SS

Since this is a transverse mounted engine I know the front four will be easy. But how do I reach the four along the back near the firewall??

Asked by for the 2006 Chevrolet Impala SS
1 answer
poss easier to repl with car lifted up on a rack