The "module" is an integral part of the coil. I picked up a new amp/coil for cheap and a NOS electronic Delco distributor (77£ just saw the invoice the other day) off eBay a while back.
TR7 Spider - 1978 Spitfire - 1976 Spitfire - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra - Yellow TCT