Hello, im trying to gather information on whether to swap my engine or build one, and also trying to figure out how to get the fastest engine i can possibly put in my car? need help!

As far as my knowledge goes b18c5 type r is the fastest engine i can buy, so i need help finding out how or where i can find the fastest engine.

Help much appreciated

 

Try hmotorsonline. They're hard to find, but they might have one.