So I found this leather jacket that I want and it's a top of the line jacket. This jacket is a small. I wear some clothing in smalls and I even have a zip up jacket (Not for riding) that is a small. My arm length is a 32" (I measured), I'm about 5'8" or 5'9" and I weigh 170 so the jacket lenght itself will be good on me too. The guy who I'm gonna buy it from is the same height too. The problem is I'm pretty well built (Not exactly a problem) and I have a 40" to 42" chest. Smalls are usually, I believe, 36" to 38". Will this be a problem for me? All other lengths and what not will fit me perfectly, but I'm worried about the chest. What do you guys think? Keep in mind I wear clothing in both smalls and medium. I have no riding stuff at this point so I don't know if it will matter if I have a big chest in a small? Any help would be great. Thanks!