Hi Mr GRIFF55íve , The 5 cell - 4.5 Sintred LRP is a ROCKET! im running low pinions on our small track, app 81/15-16..
The punch is sick, im using TSR Matched EP4600, and im running 4 back, and on on Servo side..
No not yet, but "DaHomie" have, he have run 5 and 4.5 in hes BJ4WE and it is a rocket to
I will never ever go back to 6 cells..