When I was looking for a fiberglass replacement front apron for my 72, I was refered to smoothline.com (I believe I was quoted ~$99.00 @ 5/2000 for that piece).
I've heard their fiberglass front fenders are very well made - sorry I didn't ask for a price. They also carry fiberglass hoods, rear fenders, and the headlight buckets.
I hope this helps.
-John
(BTW, I ended up getting a urathane/xenon spoiler from carparts dot com when they were coupon crazy.)