*I'm trying to source a drosophila transformation vector (like pCASPER4,
but) with attB1 and attB2 sites, to use to generate transgenic
Have you considered the Murphy Lab Gateway collection? [Only registered users see links. ]
The most basic ones have either UASt or UASp promoters driving an
untagged protein; you can also get versions with tags.
They can be ordered from the DGRC once you've signed the correct MTAs. [Only registered users see links. ]
Cornell University [Only registered users see links. ]