Another question- I have tried to figure out what year the engine is, and have tried the search, to no avail. I have found, on the driver's side, the following, on the back of the block-
F126
and
GM 4.3 16
On the other (passenger) side, I found the following:
1409909, with *maybe* another zero on the end, or it may just be a casting bump, it's really hard to tell.
Anyone out there that can tell me what year V6 I have, and what it might have been installed in originally?
Thanks in advance for any help...

Dave