Hi PJS,
I've got an E-M car, 428SCJ, Toploader, Jag IRS that is still under construction......six years and counting.
I went with the Edelbrock heads, water pump, and a 1960's vintage Edelbrock 2x4 intake which I may end up topping with a pair of their carbs. Since I was not building a race car, my only mods were to polish the OUTSIDE of each and every of the above parts....... The motor looks great and I am quite sure that the car will be fast enough for anything that I would want to do on the street.
As for the E-M, I'm very happy with the quality and factory support, when they answered the phones that is.......They are not exactly in business at the moment
, but if you can find an unfinished kit(as I did), or wait for them to re-open, I would not hesitate to buy one.
I am at a bit of a loss as far as why you would want a custom ground cam. When I did my cam shopping I ended up with a spread sheet of 30 plus cams available for the FE. It would seem to me that any of the big cam companies would have spent far more time and money engineering their products to do whatever you want, than the guy you are using. No offence intended, it just sounds a little strange to me.......
Good luck with your project!
-Jon Miller