News:
http://cgi.ebay.com/ebaymotors/B-M-10230-Flexplate-Int-Bal-SFI-6-Bolt-Mopar-727-_W0QQcmdZViewItemQQhashZitem4cf2422cc2QQitemZ330481937602QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessoriesSee the bottom flex plate? This works and doesnt require longer special bolts. Many companies make them. So prices vary. But notice the chunk missing off the bottom pic? that is to install inernal balance flywheel on external balance engine like 360 and stuff.