Word the wise folks. Those with "keeper" Mk1s would be well advised to start collecting all of the above (used/refurbed). Judging by my experiences this week, any worth refurbing and not internally perforating rubbish or those already done for re-sale, are approaching hen's teeth status..especially lower ones. Some suppliers say the Mk2/Mk2.5 ones for the rear will do...they don't. You can fit them...but the ARB lugs differ so be aware. Together with things like door cards, pop up motors, and genuine used/refurbed alternators, certain components of the Mk1's are starting to get pretty rare. I'd also really recommend getting anti corrosion into the internals of all Mk1, Mk2's now. Word is...they are approaching irreversible end of life...and are horridly expensive new.
You can fit NA ARB drop links to an NB but that would be a backwards step. You can't fit NB ARB drop links to an NA. Mazda developed the ball jointed NB drop links so as to remove the clamped rubber bushes on the ARB and wishbone attachment bracket. The bushes get a very hard time on the NA design as the Anti roll bar joints have to move much more and over a bigger range compared to the wishbone bushes which only move in a few degrees of the horizontal plane. That's why the wishbone bushes rarely actually fail but the drop link bushes do often fail on the NA.
The photo above gives an indication of how frail the NA ARB link bushes are and also shows poly bush type replacements. The Rose jointe links shown are what i made for my own car's and also sold more than 80 kits.
Of course it was the spindles and spacers that i made not the rod ends and nuts and bolts. It is possible to grind off one side of the NA wishbones u bracket and weld a 16 gauge bit of angle iron on to reinforce the area to match that of the NB wishbones but it's not a five minute job and unless you have very good fabrication skills it can look quite untidy to say the least. That work would of course not be noticed day to day but an MOT inspector might not like seeing welding on a wishbone.
Sorry that's failed
Cobblers as it I'll go somewhere else to get it looked at
1989 Mariner Blue The MX5 makes finding the longest,twistiest route to even the shortest journey an obsession. Happy to be going the slow way quickly.