3800SC V6 Swap: 1986 Pontiac Fiero GT

You might not think that there is a correct or incorrect engine to swap into a classic Pontiac Fiero...but lemme set you straight.  There are many incorrect engines to swap into a Fiero...such as anything rotary from Mazda, something with a carburetor, and anything aircooled...and this might surprise you, but there is only one engine you should ever swap into a Fiero...and here it is. Find this 1986 Pontiac Fiero GT with 3800 V6 power offered for $6000 in Brunswick, GA via craigslist. Tip from FuelTruck.

Sleeper Minivan: 1998 Olds Silhouette 3.8 SC

One of the key ingredients to a good "sleeper" is the element of surprise.  Discreet looks go a long way to successfully pulling off the concept. Very few people would suspect a minivan to have any sort of sporting intentions (much less an engine swap).  The original General Motors DustBuster minivans created a stir with their polarizing looks when introduced in the early 90's.  Today's example is a second gen version of the Olds minivan that has been blessed with a warmed over 3800 supercharged engine cribbed from a 1998 Pontiac GTP.  Find this 1998 Oldsmobile Silhouette for sale in Palm Coast, FL for $3,500 via craigslist.