i am driving a 98 mustang GT and my speedometer is not working correctly because i have 410 gears ,i dont have the speedo gear installed what would be the best to correctit, most people tell me that a speed cal whould work but i am not sure! any ideas?
Yes, get a Dallas Mustang speed caliberator. I used it on my 96 and it worked fine, dont use the site's calculator - just call em up for the right code to use they'll make it exact even down to your tire profile. If u have any question while installing it PM me, iv done it a few times now