will Edelbrock LD4B intake bolt on to a stock 1964 318 poly

LA manifold for 273 originally will not fit Poly
4 bbl manifold should not be hard to find- but is
you just missed the Pomona Swap-meet
Projects - 315 poly 2brl to 4 brl conversion
How To Give A 318 Poly Engine More Power - Mopar Muscle Magazine
spend some time on google and get involved with the Poly crowd- can be fun and informative