I agree, the Fords have always had breathing problems with the Windsor heads. My favorite engine to tinker with was the 289, though. Had two Mustangs that I "masssaged" a little over the years. Nothing overly drastic, dual exhausts, dual point centrifical advance distributors( one original Ford, the other ACCEL), some rear end gears, 500CFM Holley racing two barrels with manual chokes( these were somewhat bigger than the standard factory four barrels of the time), some timing adjustments, and in one a B&M shift kit( dang thing would get rubber in first and shifting into second under the whip!

)These mods would wake up the Windsor's some, let them breathe easier/deeper and still made them streetable and not too hard on gas as long as you behaved yourself

During that period I was raising the kids so had to keep things fairly economical.....................Buck
