wut do you mean ... if u have the b7 all you need is a z6 head ..... boom full blown minime .... all you need is around 180 for the full swap .... 100 for head and around 80 or cheaper for a head gasket ... your done .. then in like 3 days pull the b7 block and do a full z6 swap ... cuz your tired of lacking power a 1.5 gives .... i know i had one for a while ....