Rubuta ci gaba don wannan sakin layi - JS29 ya kamata ya fara zama a 1987 Brazilian Grand Prix ta amfani da Alfa Romeo 890T V8 turbo har sai 415T ya shirya. Koyaya, bayan maganganun Arnoux mara kyau, da kuma ficewar Fiat, wannan yana nufin cewa ƙungiyar ba ta da injin da za ta yi gasa da shi har zuwa tseren na biyu a San Marino
Ka yi haƙuri. A can ne JS29B tare da injin Megatron zai fara gasar. An sabunta JS29B bayan Detroit Grand Prix zuwa ƙayyadaddun bayanan JS29C na ƙarshe. Duk da yake an tsara JS29 ne don injin Alfa mai silinda 4, ba wai kawai batun maye gurbin Megatron 4-silinda a wurinsa ba. Babban bambance-bambance a cikin 'bututun ruwa' na injunan biyu ya sa ƙungiyar ta sake tsara motar, musamman ma dakatarwar ta baya kamar yadda gwaje-gwaje suka nuna cewa Megatron yana haifar da mummunan rawar jiki wanda ke haifar da gazawar dakatarwa.