building a '99 Trek 830 AL

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so I'm retiring my early-mid 90's ChroMo Stumpjumper and building up a '99 Trek I got in a load of bikes. The frame is a lovely metallic green, and most of the stuff I used building up the Specialized will transfer over. I did drop $90 on a RockShox XC28 fork (new), gonna need a new bottom bracket and front derailleur. The Trek BB and front derailleur are a goofy E-type mounting jobby (Altus), and I'd rather have just a clamp-on Shimano new, if possible.

The specs of the bike used to be... MSRP (new) $439.99, 19.5", Metal Flake Green, TIG-welded 7005 aluminum, Fork RST 281, 2.6" travel, brakeset Lee Chi ProMax MV-33 linear-pull brakes, Lee Chi LV77E levers, Shift Levers SRAM ESP 5.0, Front Derailleur Shimano Altus, top-pull/bottom bracket mount, Rear Derailleur SRAM ESP 5.0, Crankset Shimano Altus, 24/34/42 teeth, Pedals Alloy w/alloy cage, Bottom Bracket Shimano BB-CT92E, 121mm spindle, BB Shell Width 73mm English, Rear Cogs 8-speed, 11 - 30 teeth, Seatpost Aluminum micro-adjust, 27.2mm diameter, Handlebar ICON 6061, Handlebar Stem Alloy Ahead type Headset 1 1/8" threadless Aheadset SE-1

I'm going... Fork RockShox XC28 100mm travel, Avid 1.0 linear-pull brakes, Shimano Deore levers, Shimano LX Shift Levers, Front Derailleur Shimano ?? (top-pull/seat tube mount), Shimano XT Rear Derailleur, Girvin Crankset (24/34/42 teeth), Sun Ringle Pedals, Shimano UN53-72?? Bottom Bracket (118-121mm spindle, BB Shell Width 73mm English), Rear Cogs 8-speed Shimano, 11 - 30 teeth, Aluminum Kalloy Seatpost (27.2mm diameter), Handlebar 100mm Rise Alloy, Handlebar Stem Alloy, Ahead type Headset 1 1/8" threadless Aheadset, Sun SubIV wheelset

The crankset seems to be the same chainline (to me), and I wouldn't be keeping the 3mm thick derailleur mount, so would a 118mm Spindle, 73mm UN53 BB work? http://www.jensonusa.com/Bottom-Bracket ... e-Taper-BB

and were I to go from the plate mounted front derailleur to a seat tube mount, will a regular top swing XT work (have enough swing to reach out to the large ring)? http://www.blueskycycling.com/product70 ... -Speed.htm
 

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