 
| I need to know which 401 V8  block do I have so that I can order the correct ARP head bolts.  They are either 69 and earlier or 70 and later.  My has all 1/2" head bolts except for the bolts in the lower corner where the location pins are.  These are 7/16" bolts. I'm also looking at aluminum radiators.  I see that I can get a universal crossflow one from Summit that will fit, but I would like to use a downflow style.  There are no universal downflow style that I can find, and no one makes a direct fit for a Gremlin.  It looks like a unit from a Cuda is about the right size at 26" wide and 22" high.  Before a spend $300.00 I was wondering if anyone knows if this will fit.  Or has anyone had better luck using a crossflow vs a downflow. Thanks Ed | 
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