sealant goes on the intake side. let it get tacky. watch how you route the purge valve lines they go in between the i/c and the s/c be very careful NOT to drop the mounting bolts into the engine valley!! use a magnet. the 2 mount bolts in the front will be diffucult with the i/c lines installed. the fittings on the i/c get in the way when aligning the bolts in the hole. dont strip or crossthread them . you may want to remove the fittings and reinstall them later