Looking for info on discoed TRW 340 pistons .

These were part of a pkg. deal when I bought my '69 Dart .
I've done some web searching and found just a bit more than nothing , leads me to believe they have been discontinued for some good length of time .
They are TRW L 2385F-30 .
Here below is the bit o nothing that I found on a fleabay listing , wtf .?
340 CHRYSLER
FLAT TOP WITH 4 RELIEFS
THERE ARE 7 PISTONS THAT ARE " SHINNY" AND 1 THAT IS "DULL"
8 PISTONS, 8 PINS AND LOCKS FOR THE PINS
57CC HEAD---- 9.05 TO 1
60.6CC HEAD--- 8.76 TO 1
63CC HEAD---- 8.56 TO 1
65CC HEAD--- 8.39 TO 1
68.4CC HEAD--- 9.14 TO 1
Mine are all "shinny" and I hope they work out a little more uniformly in the compression ratio department . Somewhat low in compression but i'm sure I can deal w/ that .They are a bit weighty tho at 900g w/ the wrist pin .
Thought I,d find an old pdf doc or something , but no luck sofar . So if anyone here could shed some light with knowledge , old catalog page or something else I'd appreciate it much.
The '69 Dart package also included a '73 340 block , w/ no main caps , forged steel 340 crank , according to my dial caliper has not been turned yet but definitely used . '68 340 intake mnfld. and the AVS to top it off .
Thanks all. a bodies only , a good place to be .