What wheelbase do I have for fuel lines?

[myasylum]

I have a 73 Duster. What is the Wheelbase? 111" or 108"?
I never knew there was 2 different ones?

Heres the link for fine lines is anyone is interested to see?

http://www.finelinesinc.com/catalog/index.php?cPath=279_506&sort=2a&page=2

 

[crackedback]

108"

 

[Burntorange70]

Duster 108
Dart 111