I would get atleast a 3 core radiator. W/o AC, you shouldn't overheat...heck, you could get by w/ a 2 core...but, since you are getting a new radiator, i would get a 4 core. the price difference isn't that much, most of the problems would be labor, since you are doing that anyway, go for it if your budget allows.
If you are doing any towing or live in the mountains, definately a 4 core. If you live in Arizona or Texas or Florida or southern California...you get the idea--get a 4 core.
If none of those things apply, you can get a 3 core. If you are going to keep the vehicle for a long time, you usage of it may change over the years.....get a 4 core.
SgtDel
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