If you aint done it before take to to someone who knows what they are doing.

forgetting to check or tighten something to the correct torque could distroy £3K worth of your money.

But planning exactly what you want and getting a written quote before going ahead with the works will save you money.
Don't turn up, drop the engine off and tell them to rebuild it with loads of trick parts as they will just be rubbing there hands togeather charging you £30 an hour day works + materials

Matt.