got the motor pulled today. i removed the head and looked at the cylinder walls and they have black scratches in them. i ran my fingernail across them and didnt notice that they were gouged since my nail didnt catch any of them. would that explain loss of compression? my buddy is gettin a flow bench sometime this year so im gonna have the head stripped and checked for cracks and warpage then cleaned. i might just go and port and polish the head and intake mani runners. the mount on the b20a on the timing side is way different than on the b21a1...any suggestions on the mount? the main engine harness is also on the opposite side as my mate connector in my passenger fenderwell....any suggestions on the harness? the b20a has 2 oxygen sensors which are on the manifold in the heat shield area...should i leave the existing sensor in the pipe down near the catalytic converter? i have to replace both of my steering knuckle assemblies since who owned it before me twisted one of the lug nut studs completely of on both sides. anyone have suggestions?