7g Valve seals??

So I need to replace the valve seals in my 7G as its eating oil at an astonishing rate when its cold. (The techs at the dealership I used to work at said as long as you replace them and timing belts they run forever!) Anyway I am pretty aware of whats involved in changing them out. My only question is WHAT kind of spring compressor does one use? Does it have to be a special Mitsu one or will something I can rent work? I assume that to keep the valves in the head I'll have to pressurize the cylinder too right? Who's done one?

I think the only tool you can use with the head on the block is the special miller tool. If you take the head off the block, any c-clamp style compressor would work.

got a link to the "miller tool"? I have access to the mitsu dealer so if they have a tool I probably can borrow it