$91 is not too much to pay when you take into consideration the time you can involve in doing something else. Your time is worth something. Chris told you right, he is a good member. I would replace with OEM for the reason he gave as far as vibration concerns, though as I recall it is a bosch type injection, which would negate length concerns. Even though shorter could increase injection pressure, and shorten response time slightly, on the one injector, balanced is always better. You made the right choice!!