I'm searching for an A3640 turboboard for my A4000/040.
Any offers? Please PM me 
Cheers
Jon
Hi, Jon. Could you clarify, do you want an A3640 or an accelerator?
I think there's an Ebay listing the Bilge Rat linked to that has a 4000 motherboard (bad) with a functional 25Mhz '040 processor card.