Mr Jones
I an sorry to hear about your problems with your engine. There hoever two company's that use the fastco name one is DR Dee and the other is Smax Smith who now is based in Canada and ships over engines and part though a company in Norwich.
If you engine came from the fastco (canada) then I am afraid you are just another customer to be burnt by Smax. I was also one, and have had to have my engine rebuilt due to poor workmanship and gearbox.
I have attached the link to Smax's Site.
Smax Smith - Top Fuel Drag Racing Champion