1JZ and 2JZ oil pans are the same.
Where's it leaking from? There's no gasket on teh pan per-se, just sealant, which can be re-sealed. If it is cracked, it may be cheaper to have a shop weld it back up. You can get a new pan at a dealership though, just ask for one from a 94 Supra twin turbo. There's 2 parts to it, a lower and an upper part. Just get the one you need.
While you're there, get a tube of FIPG to seal it with.