-compression check
--be sure all 4 cylinders are within 20% of each other...
--180+ numbers are good

(but in theory as long as they are close, you'll be fine)
-no need to run colder plugs (you're only running a 25 shot

)
-no need to retard ignition (you're only running a 25 shot

)
-no need for fuel system changes (you're only running a 25 shot

)
any questions?