DROP IN BORE 3.897 1.5 1.5 2.5 PLASMA MOLY & NAPIER DROP IN DROP IN BORE 4.065 1.5 1.5 2.5 PLASMA MOLY & NAPIER DROP IN FILE FIT BORE 4.085 1.5 1.5 3.0 PLASMA MOLY & NAPIER FILE FIT FILE FIT BORE 4.185 1.5 1.5 3.0 PLASMA MOLY & NAPIER FILE FIT