i got on the rollers yesterday, just to see where i was at with the rwhp numbers, we gained 10 ( in the heat ) from a 440 to a 450, by going from a dynatech long tubes to kooks 1 7/8 to 2" steps into a 3.5 collector into a Y pipe. thats the only thing we changed from the ECSB to the RCSB and gained 10 rwhp ( not bad ) right now i am having a cam spected out once again, hoping to push closer to the 500 mark on rwhp we'll also be making a few other changes to reach that goal, mind you this is on a lq9 short block with l92 ported heads