Help identifying after market parts

[S.A. supra]

Fellow supra owner had these under her hood. Need help identifying down pipe, manifold, and waste gate.
The manifold has cuts were the bolts go. never seen that before. Looks to be a t4 manifold Any help identifying them would be great.

 

[gotsomegetsome]

that is one jenky looking downpipe sorta thing....

 

[S.A. supra]

Yeah that might be some really old, old school stuff. I'm really interested to find out what kind of manifold that is. Also never seen a waste gate like that.