hello can you take a 1990 305 roller sbc and 1. fit 283 small valve heads with staggered valve covers - no accessory drillings - what is the max intake valve 2. run the early style intake with the oil filler in it, even though the later block does not have the tower to get the oil into the pan. 3. I use the alternator that looks like a dynamo and mount it to the exhaust manifold - ? If so and I use tube headers, what does the mount look like? 4. how do I go about fitting a power steering pump IF I have no accessory holes in the heads - dpo oem mounts exist for the non tapped heads 5. do I have to have the short pump and a 63 double crank pulley, does the later 305 balancer move the pulley out?