I tried stock 5.7 manifolds from the cars. Not even close. It's 3 inches from head to the control arm. Truck manifold may be better. I used nuts that were bigger than the bolts. I started with washers to get them even. Just happened to be the right length stacking nuts. The oil filter is directly on the block pointing down. I'm using the car front. AC compressor is down low on driver side.