I'd like to replace the factory gray steel wheels on my '93 SR5 22R/4cyl. w/ '96 or later six spoke factory alloys. I've done a little investigating and found a 15x7 alloy, 16x7 alloy Chou Seiki shank style lug, and a 16x7 alloy Chou Seiki acorn style lug. Not sure which model is best for a...