roof structure question

[5wndwcpe]

My '69 may need the front inner structure (that runs from windshield post to windshield post) replaced. 

I have a '68 Plymouth Satellite parts car but, here's the rub - it's a four door.  It measures the same width wise, but I don't know if the radius is the same. Can I use this ?

If the 4 dr piece won't work, what other cars (model/year) can I crib this piece from ?

Thanks

[green69rt]

Can you make a template off of the parts car and put it  on the 69 to see if it matches?

[5wndwcpe]

A template might work, measurements for sure though.

[gtx6970]

Are you talking about the firewall and/or the upper cowl at the base of the windshield ?

If so , Im about 99 % sure they are the same.
Its the A posts and glass that are different