All Aluminum 3 Row 15 x 23 Core dimensions. This item is designed after the smaller core size for the 1969-1970 vehicles. (23 1/2 is the length across the core fin area). There was a larger model that measured 25 1/2. This item will work with minor modifications for the larger sizes. See copper radiator 25 1/2 core for a stock larger item.<br><br>Core Dimensions: 15 1/2 x 23 1/2<br>Overall : 22 x 28 1/4<br>Thickness: 2-1/4<br>Tanks Thickness: 2-1/2<br>Rows: 3<br>Tank Construction: Aluminun<br>Core Construction: Aluminum<br>Inlet Diameter: 1 1/2<br>Outlet Diameter: 1 3/4<br>TOC: 1/2" 20 STRAIGHT THREAD G1/4 <br>EOC: NA<br>EOC Length: NA<br>BRACKET MOUNT<br><br><font class="HiliteFONT">Suggested Add-Ons:</font><br>Radiator Cap (<a href="http://www.radiatorexpress.com/product.asp?part_id=221633" target="_blank">SKU 221633</a>) <br>Thermostat Relay Kit (<a href="http://www.radiatorexpress.com/product.asp?part_id=221453" target="_blank">SKU 221453</a>) <br>Overflow Tank (<a href="http://www.radiatorexpress.com/category.asp?cat_id=R023" target="_blank">See Category</a>)<br>Two 12" Electric fans (<a href="http://www.radiatorexpress.com/product.asp?part_id=221449" target="_blank">SKU 221449</a>)<br>Or one 16" fan (<a href="http://www.radiatorexpress.com/product.asp?part_id=221446" target="_blank">SKU 221446</a>) for this core size<br>Shroud - See related item 222568 for engine driven setup