first off, thank you for any help that I receive ahead of time.
I have tried to search for this on this site, youtube, google and all to no avail ....
my #1 main crankshaft bearing decided to disintegrate into graffiti on my IS300 that has 200k+ miles on it, so I was forced to replace the motor.
my problem is the old engine didn't have this fuel tube below my intake and for the life of me I cant find out where or what to hook it up to.
by change I was hoping someone here has had the same issue and can give me some guidance as to what I can do or hook it up to ..... if lucky the pic will show and the gurus here may be able to help an old man.

 

just in case anybody wants to giggle at the rod rattling on the crank

 

I think that's the fuel return hose. IS300s don't have a fuel return line, but some JDM and older VVTI 2JZ cars do. I think you need to swap over your fuel rail from your old motor to this one