my chevy has had some 454 s now 548 with a blower. stock front with the bell crank center arm is juck . could you get the 454 in there with that old front end maybe but fender well headers would be a must . i clip my car many years ago so the BBC is a drop in. with the stock front the a bbc would be a hand full to turn the car at a dead stop my car with the stock front and SBC was not that much fun with the clip and power steer thing fun to drive