I'm looking at trying a carb spacer on my car. What is the best to use,four hole,open,tapered,and what size. My combo is a 2900lb demon with 4:11 gears and a power gluide. Motor is a 436 small block with a CNC 360-1 top end with a 1050 dominator carb. Do you think a spcer will help and what kind...