im with sleep what ever head you can get a better price,i say go with lsvtec cause you can sell that b20 block and use that money to get a head you will not get much money for the block,i myself dont like the golden eagle kit,but on a oil pump obd2 is best water pumps are the same either is fine vtec or non i like useing ls myself just cause the ls timing belts are 25bucks cheaper then a vtec one.just take your time you will enjoy it,i read the N20 you will need aftermarket parts if you going to use hat but if you have the money go for it