The cost of insurance depends on your driving record, where you live, how much you paid for the car, where it is kept at night, whether it is garaged, and how much you drive, plus a few more.
Just pick up the phone and call your agent; he/she will be happy to tell you exactly what insurance will cost.
Also some historical plates only allow so many miles a year that the car can be driven so check this out as well.
My father in law had a 641/2 mustang convertible sweet as hell, 289 and mint.
I’ve shopped a lot. These gave me the best quotes for my 21yr. old son.
Be careful - his 5.0 “earned” him a ticket and now HE PAYS the insurance.