The is only one major problem with the 3100's and thats the block has a hole for a distrubtor but when gm changed the to coil pack setup. The plugged the whole for it with soild plug and o-ring seal. And if that seal goes the engine will spew oil like there's no tomrrow. And the 3100's are known for blowing lower intake gaskets around 100k. But other then that there a good engine. Oh yea one thing the trubo setup would work with the engine but it will take A LOT of custom tuning to get it right. And there is a trick that I know for changeing the back three plugs on a 3.1 3100. Take the alternator sp? off bracket and call and set it up ontop of the engine and there you go a clear shot to the back three and no un hooking dog bones or nothing.
