▁a ▁P 4 ▁engine . ▁ ▁The ▁ 4 1 2 ▁P ▁and ▁P 4 ▁models ▁wer en ' t ▁el ig ible ▁for ▁the ▁International ▁Championship ▁of ▁M akes ▁in ▁ 1 9 6 8 ▁as ▁their ▁engines ▁were ▁too ▁large ▁for ▁the ▁new ▁ 3 ▁lit re ▁Group ▁ 6 ▁Pro totype ▁category ▁and ▁too ▁few ▁examples ▁had ▁been ▁built ▁to ▁allow ▁hom olog ation ▁for ▁the ▁ 5 ▁lit re ▁Group ▁ 4 ▁Sports ▁Car ▁category ▁which ▁required ▁production ▁of ▁at ▁least ▁ 5 0 ▁units . ▁Ferr ari ▁did ▁not ▁contest ▁the ▁championship ▁for ▁a ▁year ▁in ▁protest . ▁ ▁Two ▁ 4 1 2 ▁P ▁Berlin ett as ▁were ▁originally ▁built . ▁ ▁Two ▁P 3 ' s ▁were ▁converted ▁to ▁ 4 1 2 P ' s ▁by ▁Ferr ari : ▁▁ 0 8 4 4 ▁Origin ally ▁a ▁works ▁Berlin etta ▁was ▁converted ▁by ▁Ferr ari ▁from ▁a ▁P 3 ▁to ▁into ▁a ▁customer ▁con cess ion aires ▁P 3 / 4 1 2 ▁P , ▁then ▁by ▁Ferr ari ▁and ▁N ART ▁to ▁an ▁open ▁b arch etta ▁ 3 3 0 ▁Can ▁Am , ▁and ▁is ▁currently ▁in ▁Germany ▁fitted ▁with ▁a ▁Berlin etta ▁ 4 1 2 ▁P ▁body . ▁▁ 0 8 4 8 ▁Origin ally ▁a ▁works ▁Berlin etta ▁was ▁converted ▁by ▁Ferr ari ▁from ▁a ▁P 3 ▁to ▁a ▁customer ▁con cess ion aires ▁P 3 / 4 1 2 ▁P ▁and ▁is ▁currently ▁in ▁Switzerland . ▁▁ 0 8