I've just spoken to the good people in the States about this custom bracket, which they say locates the pump "slightly higher and closer" to the block. I'm waiting for the exact dimensions to come through and I'll make a template to see if it fits. Lateral alignment of the pulley is unchanged apparently, so it sounds promising.
http://cgi.ebay.com/ebaymotors/ws/eB...m=290332985076