Hello all!

Looking for a little help with the torsion bars that should be used in my '71 Charger.
Was original 318 and now 440 and need to upgrade the bars to sute the current combo.

Guess the question is what diameter are the big block bars supposed to be and what would be the number on them. Also would it be advisable/advantageous to go larger than the O.E.M. standard size and what should I look for?

Always appreciate the help!
Greg