I have the March Ultra Mid Mount on my 66 454. Very clean and you can use your accessories and the Sanden A/C compressor that works with the VA kit. When I bought my VA kit they deleted the A/C brackets and added the correct compressor for the March Pulley's. They have a small block/long water pump kit.Ck my sig for photos. You don't say what year you are working on but I know that on the early Chevelles (64-67)you have to use the mid mount kit to raise the P/S pump up to clear the steering gear.