Originally Posted by mustang0
Unless the diameter of the shoulder fills the hole completely I wouldn't worry about the extra space. I just added some washers to add some strength to the side plate and if there are issues I'll just Tig weld them in place.
Yeah, I added a thick washer too. Now that I look at it, it appears that the Mazda bolt actually tapers in, then back out at the threads, so the regular bolt would actually fill more of the bushing on the motor bracket. No worries then, and I'm not paying $9 for a bolt.