Good day fellows!

i have some inquiries:

1. Parehas ba ang valve seal ng 4D55 at 4D56 (w/ turbo)? Kindly share your knowledge please. kasi sabi nung pinagtanungan ko sa auto supply e sabi pwede naman daw ung valve seal ng 4D55 sa 4D56.
2. At ano brand maganda para sa cylinder head gasket at valve seal?
3. Kung papalitan ba ung valve seal e papalitan din ba ung ung valve guides and seats for the intake and exhaust?

Kindly share your knowledge and experience mga sirs kasi ipapakarne ko n bukas ung pangitaas ng makina ko. salamat ng madami!