Best Machine did the lifter bushings since my block had an oversize lifter from the factory. That place is HIGH DOLLAR, if you don't have deep pockets I look elsewhere.
Am-Car engines in westland built my 340 shortblock-expect for doing the lifter bushings. No fancy machine work was done-like decking, line hone and 5,500 miles later and no problems. I don't baby my engine either, 3.91's and no OD and I stay with traffic or quicker on any freeway.
Muscle Motors re did my MP heads I found on ebay, I was going to go with them but their prices for basic work were not much cheaper then for a stroker. I told them I did not want no 4 inch stroke with a factory block, I want the engine to last a nice long life. I feel there was good reasons the factories built the BBM for the extra stroke. Look at stroke pistons and the short piston skirts