|1963 Avanti R-4130 / R-4131 (build sheet info
|There is only one build sheet for R-4130. That is a typo for R-4131. Look closely at the build sheets and you will see they are different cars.
R-4131 was a sold car and shipped to San Francisco and R-4130 was sent to engineering.
Body numbers and engine numbers are different as well as the date they were built.
They both have South Bend built bodies.