Yes the A/G hood takes heavier springs. Put the A/G stuff on the standard hood and it won't stay open.
Plymouth A/G hood springs are about the same as Charger standard hood springs. Chargers have heavier hood than Plymouths.

72 Satellite Sebring Plus 440, 72 Dart 5.9 4-spd, 68 Valiant, 73 W200, 78 D100 sb, 78 D200, 98 DAKOTA, .
Moparmarks Parts & Restorations
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Grand Jct. CO
970-261-7039
http://moparmark.com/
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