I purchased a used but nice running, nice body no rust 71 buick electra 4dr sedan, put about 700 miles on it since last october, it runs fine but needs a new exhaust from manifold to recently new muffler. I would like to put duals on it, is there anything i should know about what i may have to change interms of carb rejeting, or use of aftermarket air filter, or any problems i may have in converting to duals, not concerned about gas mileage, since it is a 455. any advice will be well appreciated. oh, and what i should expect to pay for duals.
