Yes. What was on the car the day the dealer handed over the keys to the original buyer - that car and all it's options (including factory and dealer installed) is what defines "original" . . . IMO.

Cowl plenum crossram air cleaner
 

If there is any chance you or your friend would like to sell the air cleaner, please PM me.

What was the rpo for the cross ram in 69 ?

I have never heard of the cross ram being a rpo in 69 and don't know of any documented ones in the trunk.

Ditto Charley. I have never seen or heard of an rpo code or GM documentation for crossram. only a service item. Lee what website did you find this?

Urban legend..

I didn't want to say anything, but........Charley and Steve beat me too it.

I think that myth developed from the different Z/28 codes in 68. In 68 you could order with headers, that were, in fact, in the trunk and could be dealer installed.

The cross ram was pretty well known by the 69 model year, especially after Car & Driver did the 68 Z (with over the counter cross ram and over the counter 4 wheel disc brakes) comparison with a 302 Ford Tunnel Port engine Mustang. Lots of guys just assumed they could order the next year (69) with headers and cross ram. Of course, you could order both headers and cross ram over the counter, and there may have been a few dealers that would even do the swap for you, as the feds really weren't cracking down that badly yet.