What are the major difference?? my A/C system is SHOT! condesor is leaking, dryer is done, compressor seized and cause the clutch/bearing to just fall off the car...

so which radiator is better?? should i stick with a single core?? or should i get a dual core rad.?? i mean is dual core better or what??

so im just gonna take all that **** out and laff at it and i'm gonna get an AN-R header (not anytime soon . . .) but there are 2 headers different headers, one for single core rad, and one for dual core rad.

EDIT: what are advantages to dual core over single?