I am looking for a template or drawings for the placement of the front chin spoiler and go-wing on a 70 Cuda.
Thanks,
Jeff
I would pick-up an assembly manual if you can (find an original one or a reproduction at a minimum). (I have not found an original yet, but would really like one if they are out there.) Here is a sample. The Shop Manual is good for starters, but the assembly manual provides greater details. The reproductions are not very readable. I am not sure if you are talking about the "air shield" when you say "chin spoiler". Others might have better drawings.
In this case the FSM would be no help... Here's an original instruction paper that would have been included with the front spoiler package {it's already on this site somewhere}... The rear pedistal spoiler had a few different ways to locate the correct placement... One way would be to mount your under deck reinforcement plates and hardware...Then mark the underside of the deck lid using the correct size drill bit through the mounting nuts...I'll include what the measurements are from the top side of the decklid but this isn't the most accurate method only a redundant check to confirm placement...
Did you look in the drawings section of this site?
Spoiler drawings are in there for download.
https://www.e-bodies.org/resources/cuda_challenger_tsb_specifications_engineering_illustrations_drawings/
Does your trunk lid have spoiler provisions? If so, assemble brackets to decklid and add the adjusting hardware to the brackets. Us center holes in adjusting hardware to guide the drill bit upwards through the deck lid. Works every time and holes line up perfect. This method used to be in the old YearOne catalogs.