OK ... let's start with disk brakes.
Option 1 - link pin beams only - wide 5 conversion only - front only. (around $900 last I checked a couple of years ago - I have no weight data, so no idea about performance issues)
Option 2 - link pin beams only - wide 5 conversion only - front and rear (I don't know that I've seen a rear conversion option from anyone for that).
option 3 - Link pin beams only - 4 bolt hubs only - front only - requires conversion to later model 4 bolt wheels (but conversion kit is considerably less expensive) - this is the conversion that I tested several years ago - about $300 IIRC).
option 4 - Link pin beams only - 4 bolt hubs only - front and rear .. I THINK this is available - front about $300 and rear about another $300.
option 5 - Link pin beams only - 4 bolt hubs or wide five - front only. Considerable difference in price - no idea about any difference in performance.
option 6 - link pin beams only - 4 bolt hubs or wide five in front - 4 bolt or wide five in rear (I have not seen a conversion kit for wide 5 in rear .. but it might be out there).
option 7 - allow conversion to ball joint beams - 4 bolt only - front only - this is a MUCH bigger configuration change and we have NO IDEA how it might affect handling/performance - how would we manage it ... how could we balance potential advantages?? Significant weight change of beam and hardware as well as track.
I could go on for quite a while, but let's let it stop here and see what answers come back
Remember the proviso above - we cannot afford to alienate a bunch of people that DON'T want to make the change. When I proposed option #3 several years ago, it was SOUNDLY shot down by the membership as too expensive and a 'required upgrade to remain competitive'. Can we expect to bring in more people than leave if we implement a change like any of these ??
Steve, FV80