What kind of engine would be best for a 1967 Ford Mustang Fastback?

ok. so im planning to get a 1967 ford mustang fastback in the future. I wanna what kind of engine would be the best, like for example i want the car to kind of like rock in place, like shake around. I dont know much about cars and engines, also, around hoe much would the engine cost? id really appreciate your guys's answers.What kind of engine would be best for a 1967 Ford Mustang Fastback?I like for old school the 390 ci up too a 428 cobrajet. get a 500 plus lift cam, aprx 250 durration I have a merc 410 engine (390 bore 428 stroke) its punched out 30, running a 513/ 292 durration , dont remember the split numbers, it is running 427 ford heads, 427 long tube exhaust manifolds (cast iron nascar) lemans rods. ballanced all this and more in a 1957 ford f100. when I idle at a stop the entire truck shakes. im running flow masters right off the collectors. the 410 was fords special engine for Merc wagons for 2 years only. a little more power than a 390. with the performance heads etc. I estimate hp at aprx 530 and torque outragious.