I'm in the process of putting big brakes on my AE104 which uses the same front hub carriers as AE92 & AE100 etc. I'm using 280mm discs and S4/5 RX7 4 pot Calipers, these fit inside MOST 15 x 6.5 and 15 x 7 Mags and larger.
An adapter needs to be used to mount the caliper to which then inturn bolts to the hub carrier, I will be getting these parts profile cut. Would there be any interest out there in these Brackets? I can supply the part number or even supply new DBA 280mm discs with the correct dish height for this all to work, and with enough time I could probably even source some calipers and supply them with new brake hoses is you wanted to go that far.
If you'd be intested Let me know in this thread or PM me.
Cheers
Shane