Mike,
That is exactly what I found in the rear of my car. I moved from the 54s to 55s and it helped but the car would still hit and I needed excessive oil weight in the rear. I started looking at setups and found if I took 56 pistons and drilled three holes out to 55 then the oil would work correctly and keep the car nice and stable with 40 wt. Sometimes I run 35 and sometimes I run 45. It just depends. I do not change pistons any more.
Green springs.
The 40 wt happened to be what I was running in the front so I just keep it that way. I think they are 55s with 40wt and green springs.
The guys at my LHS build tracks where you jump a big jump and then have to land flat. It is retarded but that is what I have to deal with for the rear of my car. It work surprisingly well everywhere.
TEX
