Griifin

ECP 26" Aluminum Small Block Mopar Radiator - Big Cooling Tub​

All aluminum construction with a heavy duty 2-row core with 1.0" tubes (not a 3-row gimmick making outrageous 1000HP cooling claims). Beware of gimmick 2-rows with 1 row of 1.0" tubes and a second row of 1/2" tubes! MOST other 2-rows on Ebay are only 2-rows of 3/4" tubes, not 2-rows of 1.0" tubes!

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This! I have one. Cools VERY well with a 190 t-stat. Direct fit, perfect, in my iron head Duster 340.
$350!

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I use a Hayden Clutch:

CHRYSLER Hayden Automotive 2947 Hayden Fan Clutches | Summit Racing

340 in stock spool mount location, ECP 26” radiator, and the low profile Hayden high performance clutch fan. You can’t make this car run hot. 3/4” clearance to the fins. Very adequate.