IFS 2RZ / 3RZ swap info needed

[MR2_Z]

I just picked up a new project vehicle. It's a '91 4runner with a 3VZE.  I would like to swap in either a 2RZ or 3RZ engine.  I found a complete 2RZ that I am considering picking up, as the price is right.
  What Kind of clearance issues are there, with having IFS?  I havent been able to find any solid information on this.  What oil pan do I need? 
Thanks
Zac

[MR2_Z]

Ok, well I did some asking around and the T-100 oil pan will not clear the stock diff on an IFS rig. 

[sam2145871]

SAS that thing....