Jeff, mjd66, Bob, many thanks for helping me out with this one, you all never cease to amaze me with your knowledge and quite often for us guys in England, this site is very helpful as we do have many resources to turn to.
Bob, yes that is a bit of consolation as should get my money back, although looks like I'm still in the hunt for a correct 66 HiPo pump,.
Can anyone help out again but pointing out exactly what I require for a late Jan 1966 pump. ?
Chris