Thank you for your responses. I was looking at this company as they seemed to offer all the necessary parts as a package that had been tried and tested. There do seem to be other companies offering all the necessary kit and can perhaps also offer to fit and set up. I will do some research. My car was converted from PI to SU carbs early in its life, although I do still have the PI parts. I just thought that if I was going to return it to PI, I might as well use some modern technology.