▁won ▁by ▁L ancia . ▁Although ▁both ▁L ancia ▁and ▁Por sche ▁scored ▁ 1 0 0 ▁points ▁from ▁their ▁best ▁five ▁class ▁results , ▁L ancia ▁was ▁awarded ▁the ▁title ▁based ▁on ▁its ▁six ▁divis ional ▁vict ories ▁against ▁the ▁five ▁scored ▁by ▁Por sche ▁. ▁ ▁Over ▁ 2 0 0 0   cc ▁ ▁Under ▁ 2 0 0 0   cc ▁ ▁References ▁ ▁Further ▁reading ▁ ▁External ▁links ▁▁ 1 9 8 1 ▁World ▁End urance ▁Championship ▁Race ▁Results ▁ ▁Racing ▁Sports ▁C ars ▁ ▁Category : World ▁Sport scar ▁Championship ▁seasons ▁World ▁Sport scar ▁Championship <0x0A> </s> ▁Sieg fried ▁Jerusalem ▁( born ▁ 1 7 ▁April ▁ 1 9 4 0 ) ▁is ▁a ▁German ▁oper atic ▁ten or . ▁Cl os ely ▁identified ▁with ▁the ▁held enten or ▁roles ▁of ▁Wagner , ▁he ▁has ▁performed ▁Sieg fried , ▁Sieg mund , ▁L ohen gr in , ▁Par s if al , ▁and ▁Tr istan ▁to ▁wide ▁acc laim . ▁Since ▁the ▁ 1 9 9 0 s , ▁he ▁has ▁focused ▁on ▁li eder , ▁particularly ▁those ▁by ▁Stra uss , ▁Mah ler ▁and ▁Sch umann . ▁ ▁Begin nings ▁Sieg fried ▁Jerusalem ▁was ▁born ▁at ▁Ober hausen , ▁and ▁studied ▁piano , ▁viol in ▁and ▁bass oon ▁at ▁the ▁Fol kw ang schule ▁in ▁Ess en . ▁He ▁began ▁his ▁career ▁as ▁bass oon ist , ▁being ▁engaged ▁in ▁Hof ▁in ▁ 1 9 6 1 ▁and ▁for ▁the ▁next ▁ten ▁years ▁in ▁Re ut