I did nearly the same restoration to my 73-750. Complete engine rebuild with new pistons, all updated bearings, sent head out to have new exhaust threads, three way valve grind, updated everthing, Same to transmission. Boyer, single Mikuni, new (correct) wiring harness, new signal lamps, all black bits powder coated, powder coated frame, black powder coated tripple tree, all hardware stripped and re-cad plated, new stainless hardware every where, new hoses, new clamps, pipes, mufflers, new Isolastics, brakes redone, master cyl redone, caliper rebuilt, new bars, new napolean bar end mirrors, redone instruments, repainted barrels, tins painted in original Royal Fireflake Blue, Boranni style aluminum rims, stainless spokes, new Avon tires, belt drive primary, front suspension totally redone, forks by Frank, everything polished and buffed. First service with valve adjustment included...... all done by a professional shop with over 40 years of Brit Bike experience (Frank Diehl of Classic Cycle Works in Georgetown, South Carolina)with carte-blanche to get it done right. (and I am certain I am forgetting something). I MAY have ten grand in the entire project INCLUDING the original cost of the bike when I purchased new in 1973 with all taxes!!! Don't know if I got lucky or if he got screwed, but I am one happy SOB with my experience!!!