Hey,

I have an ej25 mated to my kombi box. The clutch is very very heavy. What clutches do you guys use? Any advice?

you should use the stock subbie clutch

Thank you. So a standard suby clutch to suit ej25 should do the trick?

to use the subaru clutch you will need to fit either a subaru gearbox or an adapter bellhousing i think

Get a longer clutch lever arm for you box. Longer arm equals greater leverage and less pedal effort.