why don't you put in a mild street cam, or even a stealth IT cam like i'm going to do this fall he,he stock lift with more duration. I'm gonna guess with rebuild ...hmmmm maybe without stock cooling fan and different airbox for intake around 110-115hp. what' is the most hp i can expect out of a 1.8 liter engine when rebulding.......ok reasonably expect (Without turbocharger or a cam . Is around 150bhp attainable without a full blown nitrous eating turbocharged thing-a-ma-jig. i just want a litte more poop in my wifes 81 320i so she can get out of her own way on the freeway.......? thanks for any suggestions DCD