350 build

I need some help in my 350 build i can mechanic engines but not good with modding them so if you guys could help i would be very thankfull ok so heres the car i have a 1986 pontiac grand prix been sitting around with a 305 with a cracked intake and stretched timing chain so i decided to buy a 350 and 350 turbo trans for it now what i'm looking for is around 350 to 400hp and i'm not to sure on the combos for this set-up i had thought about getting a 400sbc crank and making a 383 stroker but not sure if i want to do that i'm kind of confused on what to do and what would be best and most efficient way to build this motor so it wont break after the first couple races and please remember that i work for 9 dollars an hour so i cant afford 2 thousand dollar aluminum race heads or none of the sort but any suggestions would be much appreciated