Quoted from Yipykya:I would think the only way to get the Limited Edition Alien pin with the 35th Aniversary art package is to buy the Alien LE pin, cabinet and all.
You can dress the FT SE cabinet up to have the Alien LE game play experience by buying the extra pieces but the numbered plaque and exclusive 35th art package will only come with the whole complete LE unit.
Naturally, the cabinet and trim will always be the same original color you bought it as - no matter what kit you have in there, but all else will be the full LE experience. I specifically asked Melissa about the yellow beacons on top of the cabinet and she said they are included in the Alien LE conversion kit.
EDIT: So I will not have the Alien LE green legs or armor as my Full Throttle will be black with red hardware and that will never change.
Added over 8 years ago: According to Andrew, the Alien expansion kit will not be a true LE, but we can add the beacons and fibre optic ramps, etc. That sounds fair to me.