340 intake and carb help

Guys need some help on choosing an intake and carb for my 69 340 swinger the motor is .060 over kb 243 pistons,mp cam 450-455 lift,4 speed and a 3.55 posi tti headers 3 in exhaust eventually i will put on my str-12 but i need a combo for now to get her goin for summer and out of storage ur help is appreciated

Can you list the tire size, specs of the cam and tell me your compression ratio.

Like the pigeons in "Bolt"

"U'm unfamilur with dat cam."

Otherwise, rrvolare's reply is good. A LD340 and a 650, I'm not to sure a 750 will be so happy ontop of a 3.55 geared car. If you cn tune a carb OK, it'll work fine.