I've said it before in another thread, at least when you make your own, you know what you have, assuming you purchased from a reputable vendor. The prefab fixtures are likely based on older emitters (lead times, mfg times etc) and lower efficiency bins (reduced cost).
op has told us.
1. he has no real tools... which means it will cost more then him going out and buying one because of the tools...
(multimeter + soldering iron + drill or whatnots / dremel)
2. Whats even more scary, is OP has no skills in electrical, meaning half the guides which are written wont make sense to him, because he has no experience with electrical.
3. There are many retrofit kits, i could recommend a lot, but once again,, without tools, those retrofit kits are just Parts which the op has no clue on how to setup.
OP i would make one for you, but i hate shipping out of country... even to canada...
If your really lost, possibly the next time my uncle comes to visit me this xmas, i may be able to fab something and ask him to take it to canada and mail it out for me.
But... even if someone was to commission it, it would still probably cost anywhere from 100-150 dollars in raw parts.