IMHO a good old Fuzz Face in front of an old pushed Marshall with a vintage style Strat is one of the very best & classic guitar tone combo ever; period, the end.
Original old FF are now crazy $$$, and they vary a LOT; I've had a few, never had 2 that sounded & felt the same, I mean not even close they were all over the place.
I'd start by trying the different recent big OG size Dunlop reissues, they made good stuff with different transistors & circuit versions.
They key IMHO with such setup is really in playing with & fine tuning the pedal controls, AND using the guitar controls; usually the magic is in the "in between" 7-9 positions on the guitar volume, and a cent of a degre variation on that pot can drastically change the drive amount & compression feel. Right hand dynamics is your best friend.. enjoy!