Since the existing is for 8i and the new install is for 9i, will it mess up oraInventory, which is at directory level above the default ORACLE_HOME?

For example, my existing has structure:

/ora01/app/oracle/oraInventory
/ora01/app/oracle/product/8.1.7 (ORACLE_HOME for 8i)
/ora01/app/oracle/product/9.2.0 (ORACLE_HOME for 9i?)
/ora01/app/oracle/admin/ORCL/...

Also I suppose even though they share the admin subdirectory (at level above ORACLE_HOMEs), they won't mess up the existing setup as long as no DB from each home uses the same SID?

thanks,