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 Dig down to Switches - Ignition -

 Find an ignition switch that has the connections you need - one or
two Accessory leads, etc., rip the factory POS switch out by the
roots, drill a 1" hole through a reinforced spot on the dash to the
right side of the column, and mount it in the dash.  Solved.

 For simple, the 95400 or 956-4116 will work.

 Watch the current ratings, these are meant for boats, tractors and
power equipment (or 1930s through 1960s cars) and only have 10-amp
rated ignition contacts and 10A - 20A - 30A Accessory circuits.  If
you need more, use a relay or two.

 You lose the locking steering column function, but trust me that
doesn't slow them down much.  Go get a steering wheel club/cane lock.

 "Modification of the ignition system" would be changing out the
computer or the distributor to a different model - all that ignition
switch does is provide an electrical power switch with some security.

 It might shock them at the Smog Check, but a clueful mechanic will
blink twice, laugh his a.s off for a minute or two, check your work,
and then congratulate you on your problem solving skills.  

 If you get an a.shole or a moron, go somewhere else - if they say
nothing, take your money, and then fail the car just for that (without
saying anything) sic the State on 'em.  They like knocking
self-absorbed little Caesar's off their perch.

   --<< Bruce >>--