Sorry I couldn't be of more help ...it's getting tougher finding decent "used" parts for these cars when pre '89 ...I've been looking 3-4 months for some I need myself. Just wanted to let you know that you could consider a wider range of cars for the "used" parts you're looking for ...'85 thru '88 Chevy Sprint & Pontiac Firefly, or '85 thru '88 Suzuki Forsa. I believe '89 & up Geo Metro is Fuel-injected with Electronic-advance Distributor ...these won't work without the computer ...if it were the other way around with a newer car, you could disconect computer controls and use a Vacuum-advance Distributor. Have you tried the Internet Used Parts search sites (there are a number of them but I only remember a couple):
Used Parts Central - Used Auto, Truck and Car Parts
Online Parts Search
