I located a couple of NPR intercoolers today and am considering getting one for my 83zxt. Price is 150.00 each. I looked at them today and the core sure is nice and thick. Scottie has one running on his car, but it seemed to me that the core was not the 23 rows high (counted top to bottom). It seems they were about 15 rows or so high. I didn't measure the core, I eyeballed it to be about 9 or 10 inches in height compared to the 14+ that Scotties' is. The other dimensions are the same (width and thickness). These units are probably out of an earlier model than the one he runs. If you are interested in me picking one up for you, let me know.