Quick fender question, plus door

The fenders that came with my HF are pretty "industrial-looking," as you all well know. I know that fender choice is going to be critical to my door placement (if you want those doors to actually OPEN), and since I'll be cutting those door holes shortly, I better get this buttoned down NOW.
Here's the question:
If I decide to use my existing fenders (for some cool customization later because that's the kind of guy I am), were there major changes to installation due to the relocated axel? (I'm too lazy to look at the plans right now, and besides--you guys now better.) Next, is there an online source for fenders?
Next, I've definitely decided on straight rectangular doors, thinking around 30 by 36. Again, is there an online source for doors of this size with windows, or am I just better off doing it out of plywood?
Thank you for coming to this post, or however else you reacted.
Here's the question:
If I decide to use my existing fenders (for some cool customization later because that's the kind of guy I am), were there major changes to installation due to the relocated axel? (I'm too lazy to look at the plans right now, and besides--you guys now better.) Next, is there an online source for fenders?
Next, I've definitely decided on straight rectangular doors, thinking around 30 by 36. Again, is there an online source for doors of this size with windows, or am I just better off doing it out of plywood?
Thank you for coming to this post, or however else you reacted.