Need some help installing new wood in a 15 touring

I have wood a fellow made from Mel Miller’s plans. Did a very nice job but my body is later built and I’m trying to mount the cowl piece on the front. I have the wood frame rails mounted on a wood assembly frame exactly as they would be on the 15 frame. A temporary body reproduction of the 1909 O-to-O winning race car is on the chassis now so I have something to drive. Pictures of the whole process is on my website - 1915 Ford Model T Touring .
Look at Body pictures - 1915 Model T Ford Body Pictures
Not quite up to date now, but I’ll update as soon as I finish this post.
Thank you in advance for help.