Flywheels... are 5VZ and 3RZ interchangeable?

Like the title says, are flywheels interchangeable from the Taco V6 and 4 cylinder? I have one that came off a 5VZ when I bought the R150F that was attached to it. I'd like to use it on my 3RZ when I put this R150F behind it. I don't they are swappable, but I'd love someone to prove me wrong.

 

They're different part numbers via Toyota.

 

Yes, they are. I may end up feeling dumb for having asked the question, but just hoping I could use what I have. I suppose I'll be selling this 5VZ flywheel and picking up a 3RZ flywheel from a junkyard.

 

Read this thread. It's a r150f swap on a 3rz. From what I get is you use all 3rz parts except for the pressure plate and transmission of course in a r150f swap.

http://www.customtacos.com/forum/13...eriences-needed.html#/topics/179433?_k=dwrdu4

You can get a 3rz flywheel for like $50 from lowrangeoffroad

 

Forgot I had read all that thread somewhere in the past. Well, new flywheel it is. I see that lowrangeoffroad has lots of parts I will need for my swap with reasonable prices. That'll save me some time scouring junkyards.