It's the same as a 2.5L. You just fill a couple oil drain backs and hack off some ears so the alt etc can bolt up. Just pull the heads and bolt them it to the block.

http://airknight.wnysportriders.org/3LFAQ.html

http://www.geocities.com/svt_mondeo/3L.html

-'96 SE MTX 3L -'98 SVT 1,173 of 6,535 -'05 Mazda 6s, loaded, g/f's ride -Need a 96-00 manual on CD? PM or email me