I know it has been propably asked before but i am new so here goes will a 98 ITR intake manifold fit a 98 gsr yes , no or little modifacatios needed????

 

No it will not. The flange is not the same. You can either cut the flange and weld a new on on it, or just get a Skunk2 manifold (pretty much the same thing as the ITR manifold).

Please note that had you used the search function, you would not have had to ask your question.

 

Also worth mentioning is that the coolant passages are completely upside down.

And yep, the Skunk2 manifold is basically the same as the ITR manifold.