Hey fellas I'm looking into revising my fuel system

Question 1 - do jdm 86 tanks fit/bolt directly into Ke70s ..I've hear the filler neck is solid and all you do is cut it down and use the flexi one off the Ke tank ??

Question 2- could I use a jdm 86 efi pump and cradle unit in my ke70 tank?? Bolt in wire up ?

Tyler