360 Compression?

So I'm beginning to notice that I have a habit of visiting old threads.
There is a guy locally that is selling a set of these Pistons, has anyone come across some information or specs related to these?
Is TRW still around or were they swallowed up by a large conglomerate?
I have a 360 Roller with a set of 1974 360 heads from a truck, (I'm assuming as they have the exhaust emissions port humps but they were never ported/drilled?) I'm trying to build a 280HP 360. The deck will be milled and the heads wil be also. I guess I'm looking for 8.75-9.25 CR. Is this possible with these pistons? I've been searching the internet but not a lot of info out there on these. Which gets me back to an earlier question, is TRW still around?

Have a good Friday everyone!