planning on getting a procharger for my 87 IROC and a 3 core radiator is required. dont know much about this stuff so help me out.

whats the difference in 2 core 3core twin high flow?
what type of radiator comes stock with a 87 IROC 350TPI?
who makes the best 3 core radiator for 3rd gen twin cooling fan camaros and where can i find it?
i will be bore and stroking my 350 to a 383 before supercharger application, will that change the type of radiator i should be runnin?

any suggestions will help thanks

 

i may have inerperited what i read wrong, the 2 core 3 core and twin highflows are intercoolers. but continueing with my questions about the best radiator i can buy for my applications?