Comp Cams High EnergyT, 268H Street Performance, Slightly Rough Idle Engine Management System Does the silver finish need

Does the silver finish need prep or can I bolt them on as-is

i 2015 Mazda MX-5 Miata 25th Anniversary Edition 2013 - 2015 Mazda MX-5 Miata Club 2006 Mazda MX-5 Miata Club Spec

smoked lens dual halo projector headlights with LED light strip

Full-length adjustable design

Comp Cams High EnergyT, 268H Street Performance, Slightly Rough Idle Engine Management System Does the silver finish needHigh EnergyT, 268H Street Performance, Slightly Rough Idle Lifter Type: Hydraulic Lifter Engine Family: Buick 198 225 c. i. odd fire 6 CYL. 1962 1967 Description: Hydraulic Performance street cam with broad powerband. Slightly rough idle. Cam Family: High EnergyT Hydraulic Flat Tappet Camshafts Specification: RPM Range: 1800 to 5800 Valve Timing: 0. 006 Lobe Separation: 110 Intake Centerline: 106 Valve Lash: Hyd. Intake Hyd. Exhaust Duration: 268