Do you want to put a 13b into a Samurai?
Yes...
Then, you need to just switch over a few things from the Samurai engine to the Swift engine. The cam, distributor housing w/dizzy, water tube at back of water pump, swap over the intake and exhaust if you want Samurai stuff, engine mounts off of Samurai... That's about it. Basically, you can take the Swift long block and switch over all of you Samurai stuff to it and put it into your ride.
-Eric