No. LEDs don't reflect properly in halogen housings - it's kind of a spray pattern. Most LED housings (like the factory ones on the JL) have projectors to cut it off from going to high. You can aim lower to minimize the problem, but you probably won't be happy with the visibility it provides you when driving in the dark.
Feit Electric40-Watt EQ T4 Bright White G9 Pin Base Dimmable Halogen Light Bulb. Model # BPQ40/G9/RP. Find My Store. for pricing and availability. 51. Multiple Options Available. Feit Electric. 10-Watt EQ MR11 Bright White G4 Base Dimmable Halogen Light Bulb (2-Pack) Model # BPXN10MR112RP.
What you need to look for are bulbs that have a thin cross section where the LED chip is located. This more closely mimics the position of the filament in a halogen bulb and will give the best results because the reflector is designed to reflect light coming from a particular point.
LED bulbs use about 10% of the energy of traditional bulbs – so 10w will give you the equivalent light output of an old 100w bulb, 6w of a 60w bulb, and so on. This one, from Ikea (again just a AUXITO Upgraded 9005 HB3 LED Headlight Bulbs 6000K White, 100W 20000 Lumens 600% Brighter. 【300% Brighter Than Halogen】- Top Automotive-Grade LED chips with 60W, 12,000LM per pair, 6500K cool white. Super focused beam pattern design provides a wider and farther lighting range which is 3 times brighter than your original halogen bulb.

Hotsystem LED bulbs at Amazon: http://amzn.to/2xjvR8rSignstek UNI-T UT210E Meter:

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can you replace halogen bulbs with led