Hello folks,


EDIT: more directly, are these two pieces of equipment suitable replacements for a GT ZR 2.0 frame and bars?
Immortal Spirit Frame
Vision Tech Aero System

Can a Shimano BB 5500, 109.5mm spindle be replaced with a standard english threaded 68mm bottom bracket without replacing any my cranks?

Yesterday I decided to start training for a triathlon and as such, require some slight modifications to my current bike (GT ZR 2.0 frame with Ultegra components). First on the block, is replacing my current (now cracked) frame with a Motobecane Immortal Spirit Carbon Fiber replacement. At this point I must point out my ignorance and ask one and all if this is a suitable replacement.

Second, is my intended purchase of a Aero-bar/base system. I am leaning towards the Vision Tech system. Is it easily/possible to install on a 1 1/8" threadless headset frame?

Next, I suspect that a forward-facing seat would make up for my stretched out position. I am fairly long-limbed at six feet in height, so will need to install the aero bar system before proceeding.

Opinions, suggestions, comments?