As Walt said...Sun tach with 6V, 8 cylinder sender on the firewall....can shop epay and find the 5K football tach to mount on dash or steering column.....EB1a sender....then you have to find someone to convert the sender from the old battery to new battery....can get expensive......have fun....Mike
link to 6K tach.....
http://www.ebay.com/itm/VINTAGE-SUN-...60a689&vxp=mtr
link to sender....
http://www.ebay.com/itm/NOS-SUN-TACH...b09d93&vxp=mtr