you have to use the whole gze block and botom end. i sounded like he just wanted to put gze internals in another block, which you can't do. but i would still just do the supra instead. and keep the rolla around for daily driveing. again.... it sounds like you have to many projects on your hands. i'd be more than willing to buy the rolla off you. even though the guy was supposed to call me when he wanted to sell it anyways.