The 8919 might be 8B19. that's a 68/Feb/19th date code. The B might be a G or E etc...if so that's just a different month. So the block is a 68. The intake is a 61 part by the intake number. Lowriser intake ports. Not the best port match but will run fine. The heads are the 68 and later std FE issues heads till the later D2 truck heads came out. C7TE rods are long 330 rods. sounds like the crank and pistons also 330 possibly. The 330's have a std 3.875 cyl bore. So depending on the exact bore size you either have a 330, 352 or 360 with that 3.50" stroke. The bell is a truck part. Those are a hair longer than the std car bells. I'm not sure if that will affect your drivetrain but possibly might need to be addressed.

That's a start anyway. Welcome to CHR!

G.