from which block is this head

[jamiemirror]

So you have these ready ?
Then buy redtop (hi-CR) crank, rods and pistons from Ebay (you can get pistons new for cheap too - "Clevite" brand). Crank and rods are the same as 4AGZE ones. That way you will finish with 10.3CR bigport engine. If you use 0.5 steel head gasket (Ebay again) you will achieve over 10.5CR without even milling the head/block !
PS: 4AG(Z)E crank use 8-bolt flywheel (so 4AC/4AF ones will not apply - they are 6-bolt ones). You can buy Fidanza flywheel + uprated clutch combo or just use 200/212mm 4AGE stock flywheel. Try to buy 4AGE AE86 bellhousing too, else you will have clearance problems with some headers (the clutch slave is on opposite side of bellhousing). You must also find 4AGE alternator bracket (or fabricate it) - the one from 4AC will not apply.
PPS: If you can get 4AG(Z)E for cheap localy (no shipping) - this will be more valuable option.