I've already completely upgraded my 67 220 with an 1800E rear axle, front hubs, caliper brackets, booster, etc. It has fully boosted dual-triangular circuit brakes and it will be really dandy when I finally put it all back together and get to drive it again. Anyway, my point is that I have done a conversion, with all 1800E parts and now do not have easy access to them to test fit different combinations of parts

For now I'm driving a 68 sedan with split-circuit externally boosted brakes. This system is barely adequate and I do not put substantial faith in it. So I bought a complete 140 booster, master cylinder, and standoff. Once I have a new flange bracket made, I do a partially upgrade for this car too. I still need the dual-circuit calipers, a lower junction box, and more hard line if I want to take this car to dual-triangular brakes.

Anyway, I have access to some 1800 dual-circuit calipers and possibly the brackets too, but I do not want to deal with finding later style hubs and I want to keep my original wheels front and back.

My question is whether you can use the latter style calipers and bracket with the earlier single-circuit wheel hub? I seem to think that there might be an offset issue. If so, can the offset be solved with some grade 8 washers, or can the original caliper brackets be used?