after doing a mini me swap z6 head on a zc bottom end i took the car around the block and the motor started to misfire really bad and then it wouldn't rev past around 2k-2.5k then all the sudden it would shoot off then the rpms would just drop clear done....so after a fun time getting it home i check for spark and there was hardly any spark..and my car was running real rich cause of hardly any spark....what all should i check w/ this matter?

 

Since you did a minime head swap you should double check your timing on the motor and also see if you have any wire mess up or a bad ground.