jus wonderin what auto gearbox is in my Eb falcon v8 ....c6....c10 or sumthin not quite sure

A BTR 97LE?

If It's original, it's a BTR 95LE.
97LE was EF-L....no dipstick.

The lack of a transmission dipstick does not appear to be 100% definitive ID of a BTR97LE. I have a Jan 1995 EF in the workshop with a transmission dipstick. My last EF XR8 auto was a 1994 with a transmission dipstick and I have at least one BTR97 in my transmission collection that has a dipstick. I think the only fully accurate way to differentiate the BTR95 from BTR97 is the ID sticker on the transmission case, but agree that if it doesn't have a dipstick then it is a BTR97. ie. Not all V8 BTR's with a dipstick are 95's, some are early 97's.

BTR 95's had external band adjustments...

BTR 97's had no external band adjustments - internal adjustment. The valvebody has to be removed & selective shims are used...

This appears correct. My BTR97 with a dipstick has no external band adjusters, exactly like my BTR97 without a dipstick. Much easier than trying to read a sticker covered with 15+ years of grime