ya underbody... use some L or U channeling to hide the bulbs or leds... im using leds for my updated underbody kit cause the cold cathodes will die if one drop of moisture gets into the transformer

but im to cheap to finish upgrading the side strips with the leds....
but as to mounting the cathodes... well you can use screws BUT youll need those zip ties with the screw mounting hole.... so technicaly your screwing the zip tie down and then ziptieing the cathode tubes down
but as long as ya have good 3M double sided tape and clean both surfaces ya shouldnt have any problem... and best of all... NO HOLES!
and yes i love my lighting....

but so much stuff i want to upgrade... with so little money

got my tax check that was about 800 bucks... which 750went to my killer new radio and the rest went to my home amplifier for my old car subs. works great

rattles my dresser and my window screens. LMFAO