Did mine while the injectors were out and it was really easy to get to everything, engine was easy to turn over. This was one of the first things I did to the car.

If you have access to used tools, like a pawn shop, thinner 14mm wrenches should be thin enough without grinding. Didn't grind or bend mine.

Made a big difference, almost all valves were tight. PO must have slacked on upkeep toward the end. Records look pretty good in earlier years.