DJDay, Sparky66, sorry I couldn't reply earlier. With the new fenders the fit is guaranteed. Tischer sells the kit with the fenders, undercover and everything needed, last time I checked. I would email them and ask for the parts and part #s included, just cross-check with the list I showed in my original post.
Check these two pictures from my mod to compare the M fenders and the original non-M fenders:
New M Fenders that come with the kit:
Old non-M fenders:
I am highlighting the difference in shape and the distance to the border. I guess you can force the old one to fit (some vendors here do) but when I was mounting it myself I couldn't force it and decided I wasn't going to do it that way and bought the fenders and undercover to mount it "right"
. The M engine shield undercover only works with the M fender covers. Good luck!