If you know the specs of those bolts you may be able to find them online. I purchased 2-12mm and 6-14mm bolts for my Chevy 2500 in order to lower the nerf bars. The 14mm were 8" and the 12mm were 5". I got them through bolt depot. They were not cheap. Around $50.
Thanks for that lead. I needed 4 12 mm and 4 14 mm bolts recently to fashion some studs for mounting wheels on my German cars and found them at the local Ace hardware, We have a chain of stores here that have a really good nut and bolt department, but I will put a link to bolt depot in my browser for the future. Thanks again