tryna get close to 400 hp...Wanna work out my 973 casting 318 heads

Yea didnt have much info on that cam, and i figured it was a decent stock upgrade. but i need it to be fairly streetable too. I like the chop but the car will see stop and go traffic so i need it to not almost die when im driving around the city lol.

I know 400hp is gonna take allot of work, more than i want to spend probably for a 318. However. id be very happy with 350-375 ish. Im sure i can do that with worked 973 heads no? Id really like to use these because theyre new.