a pair of seal kits should set you back 50 bucks. piston ring seal, rubber caps for sliders, new high tensile bridge bolts. i used to have a part number, but any brake shop should be able to look them up for you, just look under ke70
get some graphite grease (aka: engine assembly lube) to lubricate the moving sliders with
the only thing that really goes wrong with the calipers is that the pistons rust around where they're supposed to seal against the ring. i believe you can buy new pistons, but you would be cheaper to just buy whole ke70s off ebay and steal the brakes off them, then re-sell them
you need to shave 1.2mm off a single db1088 (vn commodore) pad to make it a db1086 (ke70) pad
girlock calipers also give you a wider selection of wheels, as they don't have that stupid pokey out fin that the sumitomo calipers have. the wheels on my ke25 required spacers with sumitomos, but bolted onto hub with girlocks
fyi, you can just cut that fin off if you like, cafee's done it to his ke30 for wheel clearance. i can't remember what akebono calipers look like