b or d series..???

im trying to make a decision on which engine i should get so i can start setting up my car for autocross..really aint into going into drag racing unless its american and rear wheel drive... well i dont want to much wieght so what would be good a built d series or b series.. i really just want somthing to pick up around corners and get up hills faster than my whopping 70hp i was thinking for my d series a d16z6 or whatever comes in a si plus i dnt want to spend alot of money on swapping motor mounts and other shit around

B series all the way.

B SERIES!!. do an ls swap. it should fit in just fine.. if u got money or luck.. u can get a good b18c1.and well thats all u would need