Brand specific shops will give you a better job. Go to a machine shop that doesn't have torque plates for a mopar. What do you think happens on the hone? Try jigging a block for lifterbushings without the brand specific tooling. It can be done, but not with the simplicity and accuracy of brand(or block) specific tooling. Bottom line, the work you pay for will be better at a shop that specializes in your engine. You pay for set up time. You also get the advantage of a trained eye to "brand specific" traits and faults. Any machinist can make a round hole at the machine shop. Will it be straight after assembly???