hi hi kylim8
If u want to mod your s15 to 450hp then u only need to change all your eng head set to
HKS step 3,
Greddy T67,25g turbo and
Power Fc ecu.
Hope this list can give u some ideal
i bought a tacho meter 5" from a friend,send it to a workshop to install it.da prob is,da tacho is for 4 cylinder but my car is 3.i dont mind bout it coz ill be changing to 4cylider soon.annddd...my shift light...