Custom manifolds both sides..If you can't make the manifolds yourself, then it will start getting expensive, the money you'd spend on the manifolds, you'd be able to buy a spare CA18DET.

If you are going to Use a Mazda engine..use a rotary At least then everyone will know that your aim is to be different.

It mightn't be easy, but I'd like to see someone do a Mazda K8 (with aftermarket turbo). A tough sounding 6 cylinder would make it interesting. The Eunos 30x or Mazda MX3 came wth this small capacity 6 cylinder.

http://www.rs-productions.com/RSP_Mot ... sae-920677/sae-920677.htm

A 6 cylinder in a Datto would sound so wrong..that'd it'd be alright