Homebrew PCBs

I forget if I posted this question here.  I am redoing a PCB, and I must
replace the quad 3467 and 3468 transistors array chips.  They have the DH
prefix.  I am looking at replacing them with either the 2N2907 or the
2N3905 discreet transistor.  I cannot access those pesky pdf files, and
off-hand I can't see the differences between the 2N2907 and
2N3905 transistors.  Can someone let me know what the differences are?

Also, I know that a 2907 quad transistor array chip exists, but is there
something like this for the 2N3905?  I find a 5-transistor array, but not
a quad.

Thanks,
Charles