The r31 brakes were for the rear. theyre a pain in the ass to convert, and then you have to get them engineered $$$
Go to Brakes Plus with your old master cyl and get them to order a 7/8 one to fit the same bolt pattern. Just bolt the new one straight in and hook the lines back up, bleed your lines, and you're done. New master will probably cost around $100, comapared to $1000 or something silly to get r31 brakes, mod them to fit, and get them engineered. One of the fellas on here ran a 7/8 280zx master on his 120Y sedan with turbo'd toyota engine, doing some awesome track times, the master cyl was the only modification, everything else brake-wise was as it left the factory.
Electronic dizzys. Look on ebay and there's a fella with seller id with 'mal' in it, call him up (dont message him on ebay) and he can get you an electric dizzy for $160 posted. Make sure you get him to give you one with little slack in the shaft and that the gear on the bottom isnt loose or the pin is off-centre.
Rear light panel. You thought of making a custom fibreglass one? I'd just make one out of fibreglass in the 140/160Z style:
http://datsun1200.com/modules/mediawiki ... itle=PB210 look towards the bottom for round taillight versions
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Sam-U-El/Racer135
1973 B110 -
http://ozdat.com/forum/viewtopic.php?f=60&t=21539
1972 B110
1978 120Y sdn
1973 B120 - dead
1971 VB110 4dr - sold
Others:
1995 Proton Wira - daily sh#tbox