The LED bulbs now are pretty bright, probably more so then the filament bulbs, though they run much cooler and draw less amps. Plus, they have the electronics built into the bulb now. I do not recognise 1/2 those numbers, I think they have been superceded by newer numbers. If I had to guess what the real changes were, it would be the newer ones have the locking tabs AND are brighter then the older numbers. Which is why I think sometimes older plastic lens melt when you use the newer bulbs.


Ebay search with "led bulb 1034" came back with 134 hits, such as

1157 Blue 31 LED Light Bulb Turn Signal 2357 1034 7528:eBay Motors (item 120511132751 end time Jan-03-10 23:00:00 PST)