the SPortage radiator is smaller than 28" in fact, it's smaller than 20x20. it's about 19x17 or something ridiculously small. electric fans others have run with no problem are in the 16" size with the adjustable thermos, but you have to keep adjusting them til you get it right. i plan to do this mod too, but i been planning to for a couple years now. when i get the cash after the SAS is totally complete, this is one of the next steps. not necessarily looking for a HP gain, but if it happens........

95 Sportage w/welded and 5.89 geared dana 44's on 38.5" TSL's.- SADLY SOLD
CURRENTLY - 2000 sportage, 5.38 gears, welded diffs, 35" tires, 5.5" lift

http://www.cardomain.com/ride/341410