Screws:
Lots of these, mainly 4-40 sizes as per B4.1 manual. Possible use of metric on the chassis? Maybe some included?
All screws needed for the conversion will be included.
My car doesn't have the correct screws for the chassis as we tried a different chassis finish so had to use a different countersink head (this was a one off - the production chassis' will have the correct countersink).
Will try and find an answer to that one.
Bearings:
As per B4.1 manual, note the metric outdrive bearings. Maybe CML will throw some in as Team Xtreme did?
Sorry, the kit will only be for the B4.1 (no extra bearings) so you will need the metric bearings and outdrives.
Chassis:
Bulkhead
Top brace
Steering assembly and bridge
Servo mounts (?)
Yep
Bumper/skid plate
Suspension:
Complete shocks (f/r) plus bushings/spacers/screws/lock nuts
Front shock tower
Wishbones (f/r)
Caster blocks (f/r) - either B4.1, B4 or B44 usable in rear.
Steering knuckle and front axle
Hinge pins (inner and outer, f/r)
Turnbuckles and ball cups
Ball studs - as per B4.1 manual.
Rear CVDs (either B4 or B4.1, both suitable)
Conical axle spacer and roll pins
Yes to all of that, although it will come with rear inner hinge pins (as they are shorter)
Diff:
Complete ball or gear diff (metric bearings on outdrives, previously mentioned).
Gearbox:
Slipper clutch and spur gear
Not sure about this - will check B4.1 manual. Will there be many custom bits for this, or just the extra idler gear?
No custom gearbox parts except the casing itself.
Only needs one idler gear, plus the standard AE shaft and bearings to go with it (obviously these are included in the conversion so you'll only need original B4.1 gearbox inners if converting).
Stuff possibly not needed/compatible:
Rear T-piece and hinge pin braces, anti-squat shims, rear chassis brace, wing mounts (?)
Correct, a new wing mount will be included
Stuff definitely not needed:
Chassis, gearbox case, shell, rear shock tower, motor guard
Correct
PDFs are currently inaccessible to me, broadband is at dial-up speeds

- I'm bound to have missed stuff, I'll add it to this post when prompted.