Different size tranny mount bolts for different year A-bodys?

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mopardude318

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Hello friends. Just a quick unimportant question...I've noticed the transmission crossmember bolts on my 1970 Dart take a 9/16" socket (3/8" bolt) and on my 1968 Barracuda, the trans crossmember bolts are much bigger which take a 3/4" socket. (1/2"bolt) Is this normal? Did chrysler change bolt sizes over the years? The holes on my crossmember dont look to be drilled like some hackjob would do it, looks factory...

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These are "A-body trans crossmember" bolts from R/T Specialtys and they are the same size for like a 70 Dart...not a 1/2" bolt.
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I'm simply just curious...:)
 
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