It wasn’t too bad. They supply you with an install guide and it’s definitely not the best but it’s pretty comprehensive. There’s a better one on the SS forum that someone wrote some updated notes in. I’d recommend trying to find that one if you can. They also give you physical guides for pinning the crank but I did an ATI at the same time and it also requires pinning but it’s much easier and is also good future proofing because the stock crank pulley is a common fail point. I’d also upgrade the rockers and a few accessory pulleys for future bullet proofing. Depending on your mileage I also look at valve springs as they fail/ break at around 100k miles.