▁Mon za ▁was ▁a ▁one - off ▁two - se ater ▁sports ▁car ▁based ▁on ▁the ▁ 4 0 0 ▁GT ▁" Inter im ", ▁featuring ▁unique ▁body work ▁by ▁the ▁shop ▁of ▁N eri ▁and ▁Bon ac ini , ▁who ▁were ▁already ▁previously ▁known ▁for ▁their ▁work ▁on ▁the ▁" N em bo " ▁series ▁of ▁Ferr aris . ▁ ▁Giorg io ▁N eri ▁and ▁Luci ano ▁Bon ac ini ▁were ▁initially ▁h ired ▁by ▁Fer ru c cio ▁Lamb org h ini ▁in ▁ 1 9 6 3 ▁to ▁construct ▁the ▁ch ass is ▁of ▁and ▁assemble ▁the ▁first ▁prototype ▁Lamb org h ini , ▁the ▁ 3 5 0 ▁G TV . ▁Following ▁this , ▁they ▁supplied ▁some ▁early ▁production ▁ch ass is , ▁before ▁turning ▁that ▁job ▁over ▁to ▁March esi ▁once ▁series ▁production ▁of ▁the ▁ 3 5 0 ▁GT ▁was ▁well ▁under way . ▁ ▁Through ▁this ▁pre - ex isting ▁relationship ▁with ▁Lamb org h ini , ▁N eri ▁and ▁Bon ac ini ▁were ▁commission ed ▁to ▁create ▁a ▁one - off ▁two - se ater ▁sports ▁car ▁based ▁on ▁a ▁ 3 5 0 ▁GT ▁ch ass is ▁( number ▁ 0 1 0 3 0 ) ▁and ▁a ▁ 4 0 0 ▁GT ▁V - 1 2 ▁engine . ▁Poss ibly ▁built ▁for ▁an ▁unknown ▁American ▁client ▁to ▁race ▁at ▁the ▁ 2 4 ▁H ours ▁of ▁Le ▁Mans , ▁the ▁car ▁was ▁completed ▁in ▁ 1 9 6 6 ▁and ▁named ▁the ▁