402, IM NEW TO THIS! help please :)

there you go now like was stated just a few mods are enough to make a 318 run good remember these are light cars you dont need 500 horse ( but it would be fun ) these cars move easy so a small block will make them street friendly. I saw the exhaust comment and I have a bb in my car its a tight squeeze custom headers are expinsive, the basic bb swap in my dart was 150 for mounts and 525 for headers I sprung for chrome ones so another 75 and these are not the proformance ones TTIs cost upwards of 700 and thats mopar into mopar imagine what the cost of custom ones and time spent fabbing them would cost I thought I could do a bb swap cheap Im in for 1200 in parts so far just for budget sake bb+duster=$$$$ but thats my experince with it so far.