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hey i have a 2003 fuel injected (probably turning to carborated) krate 351w and is based off of the 1992 truck motor, im planning on putting the motor in my 1995 mustang Gt (that has no motor) the 351 only has about 210hp and i wanted to have about 350 horses in her, so if i replaced somethings to have that power would i have to buy new pistons? will they hold up?
Pistons aren't going to greatly affect your rpm. I would assume mid-pack pistons were used, which are a little heavier, but you won't notice the difference.