302 head questions

You need to know what your shop has the tooling for. I can do liners, but if things are really bad, or they don't have the K-Line stuff, a full guide can be done. Ask them first. In fact, I'd be curious why, if the shop is doing the work, you would be buying them. For larger parts, sure... but that's like taking a steak with you into a resturant and asking them to cook it for you for less money.