Well, if you are making a new 030 > 040 accelerator yes. But I was mostly referring to the quad doubler. I only referred to the other upgrades because they included L2 cache with the 040 upgrade.

I'm referring to this guy:

http://www.micromac.com/products/quadra_cache_cards.html The one they mention for the 660av would be wonderful. Also by today's standards and prices, I'm sure we could fit more than 128k on the pcb.

more info:

http://lowendmac.com/tech/l2cache.shtml