WE GET OUR LS ENGINES FROM THE 2000 AND UP CHEVY TRUCKS... THEY MAKE A 4.8 283 A 5.3 327 AND A 6.0 .... MY NOVA DRAG CAR IS STILL OLD SCHOOL WITH A 496 BUILT AND THESE LS ENGINES STILL KICK MY ASS,,, PISSES ME OFF.......IF YOU GO TO MUSCLERODS.COM THESE ARE THE LS CONVERSION SPECIALIST.. GO TO CUSTOMERS CARS AND YOU WILL SEE A RED AND WHITE 57 CHEVY SUNLIGHT PICURE,, THATS MY CAR NEXT TO PAUL WALKERS NOVA.....