To Go Wing or not?
Go wings don't impress me on the 70 cars. but the gull wing on the 71's are nice.
The way to place the wing on a 71 is to buy the inner deck lid brackets. Mount them with adjustment nuts. The transfer punch the holes from the inside out. This way you know your wing will line up with the inner bracket.
The bracket on the inside is there too reinforce the wing so not to bend the outer sheet metal from the wing rocking back and forth. Most deck lids on 71's without the outer center rib have the cutouts . I have seen some ribbed 72 deck lids with the cut outs. But only a couple in my 45 years of working on these cars.