Installing headers on a 72 duster.

GT340 said

Spend the money and install a mini-starter! If you don't, you will soon more be changing out the original starter because of heat from the headers. I took mine out by disassembling it piece by piece and just slipping in the mini starter (took hours to do the job).

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I had the same OEM heavy duty starter on my car since 1980, although I did add a heat shield, it is easier to install headers with the small starter, you should use a heat shield either way, depending on the age/condition of your current starter it would be advisable to have it checked out or rebuilt/replaced just my .02