1965 1966 firewall cowl diffrences what are they ????

[Redsat]

I have asked this before but it has not really been explained to me clearly, What are the differences between the 66 and 65 B body cars . I have a 65 Satellite and the cowl at the top of the firewall is stuffed so I need to replace the inner cowl but might be able to salvage the top cowl . 66 panels are available and I have a coach builder friend who tells me he can make them fit if they not totally different , so what are the differences between the two of them exactly .
Thanks guys

 

[moparmarks]

65 and 66 are totally different platforms. Frames. floors, firewall/cowl are completely different.