New guy 73 dart

thanks for all the kind words. I am kind of stuck on what i want to do with it. the engine that is in it now is just a warmd over 318. which igave to my son for his 16th birthday.I only payed 6,000 for the car and bought it from avery nice guy from FL. the car came with a .030 over 340 with 12.5.1 trw pistons etc short block and all i need is a set of heads. but with the way the price of gas and diesel is going. I am leaning more towards making it streetable. which it is now but i would like to build it to run low tens and still drive it on the street. but i know if i put the race 340 in it that is probly the way it will stay.lol so i can eather put the 340 in it or i can put a 440 in it that i used to have in my 3600 pound 65 plymouth that ran 11.70-11.80 all day long.so what would you guys do?? is anybody elese in the same boat i am in. sorry for rambling. Mopar658)