Berger,
I will suggest for you to purchase a book as a part of your project.
An Armourer's Perspective: .303 No.4(T) Sniper Rifle
http://www.snipercountry.com/BVT_Reviews/303Armourer.asp
It won't cost you much, but it will give you some insight as to the difficulties that are inherent with attempting to make a "Clone" Enfield Sniper.
I had the action chosen
I had the cheekrest
I had the mount/bracket
I had the pads
I had the screws
I got the book to help me with the project.
I have a Mill, a lathe, and some technical expertise/machining skill.
I read the book.
I sold the cheekrest, the bracket, the pads and the screws (I kept the rifle)
I bought a #4(T).
I've been to Fultons in Bisley and have photos of parts of the process for mating the pads to the receiver.
It can be done, make no mistake, but to get it done CORRECTLY, so that the scope is aligned correctly with the bore is the real challenge.
Bear in mind, the originals had the pads fitted, (bolted and "sweated" on) and then the receiver was fitted into a jig, and the finish machining of the mating surfaces was completed in the jig.
(Tolerance was about .002" for location, both horizontally and vertically, otherwise it would use too much of the available windage and elevation adjustment on the #32 telescope.)
If you're using a modern scope instead of a #32, there may be a bit more leeway there, but not a lot.
If you think you can do it, go for it, but I'll strongly suggest you buy the book to better understand the process.
Oh, and there's a guy on here, Billybob (I think) who has done this, and occasionally pops an Enfield sniper clone up in the EE, using the correct style bracket and mounts. His projects usually run under $1000, and look pretty good. I was dang close to buying one, but ended up with a real #4(T) instead.
That might be an option for you, instead of buying a $150 set of mounts and screws, a $70 cheekrest, a $230 bracket, paying a smith $200-ish or so to install the brackets, and have them not properly aligned, messing up a $375 rifle.
That said, if you must proceed, I will suggest contacting Fulton's of Bisley for a set of their mounting pads (Front and rear, with bolts) as well as a proper wood cheekrest, and go to Sarco for one of their repro scope brackets. I have also heard rumors of late regarding the existance of fake #32 telescopes, (seen at a UK militaria show I think it was). so there might be opportunity to get a cheaper look-alike of the #32.
Good luck, and keep us advised of how you intend to proceed, and take some photos of the process if you can! Pics of guns are always welcome here!
NS