Underhood dimensions 71 Swinger
The picture isn't useless, you need the rest of the factory manual though, and you need to actually READ the process in order to use the picture. It's not a standalone deal. As someone that's supposed to be a "bodyman", you should know that the process to get the dimension is just as important as the dimension itself. Everything in the early manuals assumes you've leveled the frame and dropped lines using a plumb bob. That's chassis alignment 101. There are enough measurements in the manual to locate all the critical chassis points, the body points follow from those.
That particular diagram is from the '71 Dodge body service manual, which you can download here http://www.mymopar.com/downloads/servicemanuals/1971_Dodge_Body_Service_Manual.zip
You can also download the entire 1970 service manual for Challenger's and Dart's, the body and frame alignment stuff is on page 833 http://www.mymopar.com/downloads/servicemanuals/1970_Challenger_Dart_Service_Manual.zip
As for the measurements you've posted, they're not really all that useful. If you pulled them off the car in the picture, the chassis wasn't even leveled. It's not on a flat surface, and it's not even sitting on it's suspension. These cars twist and flex quite a bit, so, there's no guarantee those measurements will be right for a car that's been leveled and squared the way they're supposed to be for taking chassis and body measurements.
If the frame rails are straight, then square the radiator support (there are more than enough dimensions in the manual to do that). If the radiator support is straight and square, the frame rails are straight and the cowl is undamaged, the inner fenders will take care of themselves. And, they don't matter beyond getting the body to fit anyway if the rest of the chassis points are correct. So, just make the fenders fit.
The picture isn't useless, you need the rest of the factory manual though, and you need to actually READ the process in order to use the picture. It's not a standalone deal. As someone that's supposed to be a "bodyman", you should know that the process to get the dimension is just as important as the dimension itself. Everything in the early manuals assumes you've leveled the frame and dropped lines using a plumb bob. That's chassis alignment 101. There are enough measurements in the manual to locate all the critical chassis points, the body points follow from those.
That particular diagram is from the '71 Dodge body service manual, which you can download here http://www.mymopar.com/downloads/servicemanuals/1971_Dodge_Body_Service_Manual.zip
You can also download the entire 1970 service manual for Challenger's and Dart's, the body and frame alignment stuff is on page 833 http://www.mymopar.com/downloads/servicemanuals/1970_Challenger_Dart_Service_Manual.zip
As for the measurements you've posted, they're not really all that useful. If you pulled them off the car in the picture, the chassis wasn't even leveled. It's not on a flat surface, and it's not even sitting on it's suspension. These cars twist and flex quite a bit, so, there's no guarantee those measurements will be right for a car that's been leveled and squared the way they're supposed to be for taking chassis and body measurements.
If the frame rails are straight, then square the radiator support (there are more than enough dimensions in the manual to do that). If the radiator support is straight and square, the frame rails are straight and the cowl is undamaged, the inner fenders will take care of themselves. And, they don't matter beyond getting the body to fit anyway if the rest of the chassis points are correct. So, just make the fenders fit.
