I replaced a pretty worn out set of OEM wires on my 470, thinking I wasn't going to see an improvement. Was I wrong. The engine jumps to life instantly, as opposed to taking several revolutions. They fit fine, too. The distributor side of the spark plug wires are 90s but the picture shows straight. It's not that the 90 degree boots won't work, but the OEM are straight and it is just a tidier installation. Also, the the boot for the coil isn't big enough.