No kit is out there. Best thing to do would be to look at the inserts and color match with LEDs. You will want a non-ghosting bulb for this machine. I just finished doing mine, and all of the inserts (like most Gottliebs of this era) are bayonet style 44s.

forget the kit. some kits are very well designed, but many aren't. the best results are achieved by opening up your game and figuring exactly what bulbs you want where. make a list. (6x 44 green, 4x 44 blue, 35 warm whites, 10 warm white flex heads ...) and then head on over to cointaker or whoever.

color-match the inserts, and get frosted bulbs for any locations where the bulb itself will be visible, otherwise they will be kinda harsh on the eyes.

^^^ I second this. You'll save $ in the process. Give Art at Comet Pinball a shout if you are looking for bulb suggestions... he's really easy to deal with

+1 to what is said. No having a kit could be a blessing as this forces you to make your own. If you still want a kit then I'd recommend calling up Melissa at Cointaker. They may not have one but they normally will work with you on putting one together.

Ive decked out a few machines putting my own LED sets together via Comet Pinball and i'll never go back to pre packaged sets again.

I just recently did my Tee'd Off (another gottlieb sys3) with LEDs and didnt bother with the kit. Went simple enough and Im a complete noob when it comes to this stuff.

I actually placed a small order first just with a variety of bulbs (color changers, different colors, etc etc) to try out a couple different variations before placing my large order covering the majority of the machine.

Did you ever get the LEDs in. I have the same machine and thinking the same. Although I may just do the whites that show and keep anything behind a colored plastic untouched (incandescent), depends on the price really.