My earthquake 3.0 has been sitting for about 5 months now without a engine. Ihave the stock sh .18 engine but Icant get it to run worth a damn. So Iwas wondering anybody know another drop in replacment engine ? Idont need anything extreme just maby something with a little more power and easier to tune thanks for any advice.

could always go with a sh 3.5 i have it on my EQ and it was easy to tune and holds a tune well

Perhaps your stock HS18 has a problem? Maybe you just need another SH18 that runs correctly? Mine has so much power the truck is hard to turn, because the front wheels dont want to stay on the ground.
IN any case if you want to send the engine to me Iwill look at it to see if it has some issues and can be repaired for a very modest fee. Its what I do.