i ran one my 64 dart with a 360(i know not a 318)great manifold .......raced 1/8 mile.....was a streat & strip car then...ran 8 flat with 484 284 cam,home ported x heads, 750 dp,4 hole spacer 10.1 comp, 904 with 3500 stall, 4.10 , dougs header , 2 1/2 exhaust all the way back ,26 by 9 slicks on rally wheels ..............still have it .....loves it from 2000 to 6500 ......momy wants it for her car....had to do some med gasket match...should be good on 318 with out gasket match ,i would think...................good luck