Brian; Exide's website has a battery selector thing on it. They suggest 41amp-hr and 435 CCA for a 16v. Sincerely; Brian (just answering my own question) -- Email LIST problems to: scirocco-l-probs@scirocco.org. To unsubscibe send "unsubscribe scirocco-l" in the message to majordomo@scirocco.org