Well,
Personally I would not do that. If you had no radiator at all and can't find one quickly,
then maybe.
But it is always preferable to re-core the original radiator instead. Every good rad shop can do that.
Price is about the same as those alu replacements....
I had my original recored at the time of restoration, going on 20 years ago. However, during hot weather, and/or stop and go driving, or stop and go in hot weather, I was close to overheating. So, after just about 10 years, I had my "recored" radiator "recored" again.
HOWEVER: and this is the big however, a traditional radiator shop will buy "off the shelf cores" that are not really exact or precise fits, and make them fit. They use what they can get, and many shops will have different core suppliers. I took someone's advice on the forum here and went to Gernold at SL Tech.
I don't know if this is still true or not, but at that time Gernold had found a place near enough to him that actually had the core-making equipment. So instead of using an off the shelf core he had this shop build 3-row cores to his own (Gernold's) specifications. Once I did that and reinstalled it, my cooling issues were a thing of the past. It was NOT cheap; before shipping, the cost back in 2011 was something around $550. I'd imagine this has gone up quite a bit since then.
Gernold has them fitted and supplies them painted to the proper color.