im in the process  of changin a motor  for a  buddy  from  six hours away   hes  got a 99  z24     i didnt  know  before i got it  the year    an   the only  2.4s  i had  were  pre  99      @!#$ty part  is   i got the car  on the hoist    now so i need get it  done   i did  sum searching   an  found  sum helpful  stuff   im  jus wonderin  if  theres anything else i should now   beside  the knock  sensor  an egr   an  as far  as the egr goes  can  i jus block it off on the head an itll b fine  any help  would be greatly  appreciated  oh  an  by the way  this site is awesome  lol
 
ECM  from a 96 is different from the 97 and up donīt know if this will cause you problems.What year is the engine ?
 
The ECM wont matter.  He is changing the motor not the computer.  If you are working on a 99, then any LD9 from a 99 and before will work.  The only real changes came in 00+ LD9's.  It should be a direct bolt in and call it a day.
 
 
sweet  ya  i got it in   used a  egr  plate  from a eco  modified a lil  of course .   welded a  nut  over the 12 mm  hole  for the knock sensor  so  the newer  8mm  knock sensor  would fit   used  everything from the newer  motor   intake  injectors   exhaust mani   thanks guys
 
One of the trans bolts may be too long, its on the front goes into oil pan if that helps had that on mine and poked a hole through the pan, so if it gets tight and there is still a good amount of bolt sticking out put some washers in place. Would need to know what year the doner motor came from for more help