magnum flexplate question (running out of questions I swear!)

b&m makes one...and mopar makes one..

as far as a stock 318/340 flexplate yes they are for internallly balanced engines....but

what converter are you running?....

they are for the 5/16 thread bolt holes....performance/racing converters use 7/16 bolt holes...

looks like this one fits all....internally balanced..

http://cgi.ebay.com/ebaymotors/Mopa...ptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories