Ok have cpl way out dated TFX92 blocks,one repaired and one brand new. Thinking about boring both to max and building two Identical bracket motors.Yes a waste,but at what most want to pay for them I can't get anything near as strong even if they are overkill. Whats max bore size on TFX92. One is 4.310 and other is 4.250 now. Can they handle 4.375? Or is that getting too big?