Impala Specs All Drawings and Specs Speeds and Mechanical Limits Pivot Points 1′ Riser, Divingboard Overslung 2′ Riser, Divingboard Overslung No Riser, Divingboard Overslung 1′ Riser, Divingboard Underslung 2′ Riser, Divingboard Underslung No Riser, Divingboard Underslung