A few things that’s sgould be mentioned:
- The wheel/tire combination that you went with on a 65-66 Mustang is considered to be on the aggressive side. With that said, it can be made to work, but you should expect that it’ll take some work.
- A good fender roll job and some clearancing in the problematic areas will be necessary.
- The sizes you selected match what I would use as well, but again, you shouldn’t expect this to be a install and go type of deal.
- Springs and shocks will help, but I don’t thing it’ll resolve your issue without the clearancing steps above.