The good thing is that, as you say, fiberglass is pretty easy to repair if you screw it up....
1) Join the front and back of the pants, shaping the joint as required. Install the nut plates - you might end up cutting one of later - no big deal.
2) Mount the inboard hardware brackets to the gear legs.
3) Mount the outboard hardware brackets to the axle nut.
4) Eye ball the cuts necessary to let the wheel pant slide down over the axle. Don't worry if this cut gets large - you'll eventually cover the whole mes with the lower gear leg fairing anyway.
5) Keep enlarging the whole as required It will be in both front and back halves, and you will have to assemble and re-assemble several times) until it sits at the proper height above ground, and contacts both inner and outer hardware brackets.
6) Go to alignment procedures - continue trimming holes if required.
Just do it!
Paul
__________________
Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 -
N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com