Replace 170 with 225

The intake is identical. Pre-'67 170s got slightly smaller carbs than 225s (1/8" smaller throttle bore), but you wouldn't notice the difference in most normal driving and there's a good chance the larger 225-sized carb has already been swapped onto the car. You can get the bushing from Pat "Torqueflite Patty" Blais [email protected] .