Originally Posted by BillBoost37
Being a 95 supercharged, it will share the same motor with only 94 and 95 series 1 supercharged. The swapping that you might hear of happening is on the series 2 non supercharged motors and while it'* been done....it'* not the recommended way for a daily driver.
This information is a bit off.
The bottom end of the motor (block, crank, pistons, rods, etc) are identical from 91-95 on the L67 (supercharged) motors. You can use any of those years. You will want to RETAIN your original crank sensor and harmonic balancer if you get an engine from one of those other years.
91-93 Superchargers and throttle bodies are different, but your replacement MOTOR can be any of those SUPERCHARGED donors.
The bottom end of the L27 wasn't designed for boost. Don't attempt the 'top swap' if you expect it to perform like the original, or to last.