 1975-1981
Externally Adjustable Regular price: $220.00 Sale price: $94.96 |  1972-1981 Regular price: $198.00 Sale price: $99.96 |  1975-1976 Regular price: $428.00 Sale price: $259.96 |
 1982-1987 Regular price: $544.00 Sale price: $279.96 |  1982-1987 Regular price: $528.00 Sale price: $367.96 |  1988-1992 Regular price: $328.00 Sale price: $183.68 |
 1988-1995 Regular price: $296.00 Sale price: $165.76 |  1997-2003 Regular price: $382.00 Sale price: $213.92 |  2003-2009 Regular price: $286.00 Sale price: $160.16 |