I am trying to get back home i know where i can get a 13b 6 port but i need to know if the nikki and the stock manifold fit, are the bolt holes the same?
Iam not looking for performance right now iam not going to drive 225 miles on #2 rotor all i need is it to get me to snowflake AZ
Thank you

 

12A and 13B intake manifolds are not interchangeable, sorry.

Good luck, though.

 

Dont they make an adapter plate to mate the 12A manifold to the 13B?

 

The only adapter plate I'm aware of mates a 12A manifold to a 4-port 13B, I don't believe it would work on a 6-port motor. That's not to say that nobody makes one to fit a 6-port 13B, I'm just not aware of one.
Here's a pic, anyway.