if your after bright light go for cold cathode lights more designed for the PC cases. these will however be more fragile than normal neons i used to have some and they were very bright but broke by leaning on them. look on ebuyer think they used to go for a couple of quid for a pair of 12"
otherwise go go LED tubes these are both brighter and more duarble than neons but cost more
note non legal lights ( anything other than white at thefront amber at the sides and red at the rear ) can only be used off road - parked up doesnt count - while the light, including glow, is visable even from the footwell
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moved to styling section