48 51EPC IDA Tall Manifolds Stadard Style with Material for Porting, Pair opt t4 mp manif s2 forged chromoly stock replacement flywheel Journal Type 4 914 forged chromoly stock replacement flywheel for 215 Porsche 914 Please check out the more common up grades to improve and complete your long block The manifolds have the same basic stock port design at the base of the manifold so they can be precisely match ported to your particular port shape Standard intake manifolds are cleared for the area around the upper intake port at the head and sheetmetal to limit modifications for installation but still allowing for the match porting with no additional welding required