2002 Nissan SE-R with SR-20 Swap???

Hey guys, Ok so the Maxima has started to die and I am trying to convince my dad to get a Sentra SE-R. But we all know the problem with the SE-R and its 2.5L engine. SO a while back this guy on the Internet had put an SR20 in the SE-R body. I want to know if they can be put in a 2002 Nissan SE-R which has had a Catalytic Converter failure. And if so how much would it cost to do the swap. The transmission for the SE-R is Automatic.

If the engine is not damaged Just get Headers. The 2.5 has better HP/Torque. this is the best option for an automatic car. The SR20 was in the SE version of the B15 before SER!