well technicly my first mod was removing all the rear seats... but my first bonneville related (read engine) mod was actually not much of a mod. but i made a huge difference.
it was a complete fluid and filter tune up. oil, tranny, coolant, NGK TR55 plugs, 8mm, PCV valve, O2 sensor, K&N, and a gutted airbox.
the goal was to get back as much of the lost stock power as possible before trying to add any with mods. the only reason i did the K&N and the 8mm Accells was because i didn't see the point in replacing them with stock if i was going to be upgrading later.
1993 Buick Lesabre Limited "Elizabeth" Light mods
1995 pontiac Trans Sport "The Vandal" On To A Better Home