[nissanminitrucker]

hopping.. with high voltage... the most would be a number 9...

 

[nissanminitrucker]

for a normal rider.. i recomend a 6

 

[nissanminitrucker]

if i was you .. i would go with lower gearing....

 

[nissanminitrucker]

i like the steel ones... with some machining.. they are great.. also depends on the usage on them.... because most of the steel pump heads now days. are very old..