I ran a stock never touched 65 C body rad and shround in my B body for years.Never went over 190 no matter what.My 440 in my 65 is radical.Had a jack slip and busted the rad.Bought a cheap Champion off Ebay for 150.It runs as cool or cooler than the factory rad.Never gets over 185.Had my doubts about it but it works.My kids 62 300 we had the OE recored to 4 core back in like 99.Shops cost was almost 400 thyen.It worked great.No shroud on it We both ran big Stainless flex fans.No problems ever.Rocky