if you are going to tune I'd go for the 95 vtec because its obd1, the 98 is obd2 which is a learniing ecu, meaning anything you do to tune it it will make corections its self returning it back to normal. they are about the same performance wise. but if you are going turbo, sleeves are a good idea for the 98, the 95 is a semi-closed deck so sleeves arent going to be necessary unless you are running a lot of boost. depends on what your budget looks like in the end