Just went through the whole process of replacing my spark plug wires that were sold to me years ago by MB but were not correct. Both the ones sold by K & K and Authentic Classics now have 90 degree boots coming off the distributor. Because mine is a late model 280SL with the distributor plastic dust cover, I needed the straight boots for a proper fit. I replaced the new wires with straight boots. What a difference with the correct wires.