Cool. I did a similar parts project with an unknown licensed rosewood fretboard neck (allparts?) and a sunburst alder johnson body.
The johnson "teles" are top loaders. If its a top loader, its just not a tele (unless you have a bigsby on it).
I got to drill my first ferrules and string throughs. I had to sand the neck pocket. Apparently, the folks in the plant who made it thought a neck should couple up to a really bumpy, partially paint filled surface. I had to fill the old neck screw holes, because they weren't even close to Fender spec, and I had to fill the original pickguard holes.
I then got a replacement vintage type bridge, pigtailmusic.com compensated brass tele barrel saddles, an earvana nut, some Kluson copy tuners from Brian (great tuners Brian!), and a Fender vintage reissue top plate, with pots, cap, and switch still in it and soldered up. Last but not least were Mighty Mite tele pickups. I'm sorry, but name brand pickups don't sound $100 better than these $30 pickups.
Anyway, my point is that I screwed up in bridge placement the first time. I had to move it over about 1/8" or so to the back and left (looking down at the front of the guitar). Of course, now the string through holes don't line up right. I drilled a path through, but its hard to get strings through. I figured I can bend the end of the string a little and turn the string until it finds the path. The guitar sounds and plays great though, and its my first tele in about 10 years.
After screwing up bridge placement (it was similar to idch's problem), I'd read someone say they ducktaped their bridge on the face of the guitar and use the two E strings to line everything up. It worked like a charm. Its perfect now. Man, I love duct tape!!!