i got a jdm type r motor and im planing on building the head leaving stock bottom but idk what compression of valves i should get high or standard compression? also what do you guys think about the 5 angle valve job?

 

is it the type r or the jdm gsr aka the sir g

 

If you are using real engine management, you could safely increase the compression.

 

i got the p28 chiped by chrome