Doug Ferrell had a great listing for interchange bearings and seals that should be posted on the Web.
Sunbeam Interchangeable Parts Fit Series III Alpine
Part Manufacturer Part No. Notes
Upper Radiator Hose Gates 26404 Cut & Fit
Lower Radiator Hose Gates 26415 Cut & Fit
Note: Much better rubber than most hoses. Easy to fit to S III-V.
Rear Shocks (S III) Monroe Gas-Matic 5854 (in 1989)
Front Shocks Monroe Gas-Matic 5829 (in 1989)
Note: I logged some miles on these shocks, and they seemed very adequate.
Disc Brake Pads also Fit: Austin/Morris 1800 1964-72 Rover 2000 1966-72 TR-4, 6, & GT-6 1962-72 (Try Roadster Factory) Ford Capri 1.3-3.0 1969-71 Ford Cortina MK 1 GT & E only 1969-70 Compares with GDB525