Speed_Freak_039
The 053 is a nice compliment to the C6, but you'll get a better bang with the RB 2045 pipe with a RB 192 header. I run this combination in my RC8T and its totally controlable and has all the bottom and topend you'll want. I run mine with a 7mm carb insert and get a 10,5 minute run time with it easy. I also run med-hot plug with mine. My engine runs a consistant 180-200 degree's in the summer or winter. My current C6 has 7 gallons through it and still runs strong. My opinion is that the c6 is the best .21 for a truggy. I've tried them all and this is the best for me.
Chuck