Is my turbo sized right? 4 Bolt turbo

[22lbChevelle]

Hey I took my compressor housing off and got right about 55.4mm Inducer and 69.85mm exducer which gives a 62.9 trim. The compressore housing is 0.60.

This is a Air Research 4 bolt turbo with a Roto Master .63 Exhaust housing.

At what point, given my combo, should I be looking to upgrade this thing? Im running 24psi with it right now.