My Mx-6 started out as a daily driven car, and i really had no plans on ever moddifying it at all. For me, it wasnt really a gradual modifying process. I did tint and a 2.5" magnaflow cat back one summer, then the next summer i jumped straight into a custom turbo setup!
The car was DAMN fast for what it was on only 5 psi. The car didnt last very long though, when it over heated and warped the heads and block.
I then decided to rebuilt the engine to rebuild the engine with forged internals. I ended up using wiesco pistons (8.7:1 c/r, stock is 9.2:1) and scat forged mustang rods. the mustangs have the same strock as a KL, so their rods work perfectly. You just need to use an over sized bearing on the crank to make up the diffrance for the smaller diameter crank journal on the KL's.
Here is the car before we did any mods to it:
