1987 Suzuki every f5a turbo
Depending on how bad the wear is you could machine it and fit oversize bearings. Personally I would stick an F8B bottom end in it (796cc) your head, sump, pickup should all bolt straight on. It would make it much more driveable, although you might need a piggyback ECU or slightly larger injectors to give it a bit more fuel.
F8B EFI turbo - Three pots and a snail.