ok, i am pretty new to honda's. I am planning on swaping the d16 out of my 5th gen civic coupe...but i am not sure for what. Definately a B series....no questions about that. But i also plan on boostin it. I have a GT 17 turbo from a 99 saab 9/5 . I work at a Saturn/Saab/Izuzu dealership so resources for saab turbo parts is awesome. Anyways, I also have a B series turbo manifold, intercooler, BOV, ignition system, FMU, bigger injectors...u know the necessary turbo components. The turbo comp's were pretty much free so that's why i am interested in boostin a B series vs my D16. I was wondering what internally is different about the B16A2, B18B and the B18C? Which would be my best choice? Which is the most boost friendly. Money is an issue, cause like i said i work at Saturn. Sure i could boost my D16 for very cheap, but she's old (123,000 miles) and boost would slowly kill it. And i know by the end of summer i would already be board of my boosted D series. Thats why i have saved a bunch of money instead of wasting it on d16. So now i am stuck with the question of which powerplant to use. What are the advantages of the b16a2 over the b18b besides the obvious lack of vtec on the b18b? What are the advantages of the b18c1 over the b16/b18b? Any help would be appreciated. By the way i won't really have the money to do any internal work on which ever engine i use until the end of summer.