for the guys that use the go .21 5 port in a buggy, what springs are you guys using.to tame the bottom,i already bought the 086 pipe,to help it, should i use 1.0 or .9 springs.iam going to put it on a cen matrix fre with 5,5,2 in the diff.should i get a smaller restrictor.iam on a budget and i dont want to spend money experimenting when i could try a set up that works with you guys.i bought this engine used before i realized this was better for a truggy.but i got a good deal so i want to make it work. thanks