Ive got a 1978 200B with a badly warped head gasket lying around, im thinking it needs a new engine. I was was thinking of finding another 200B engine but am wondering what else would be compatible/ recommended for the 200B. a friend of mine has a 1987 nissan pulsar hanging around with low k's, would the motor from it slot in and be powerful enough for the 200B? I'm not particularly mechanically minded so for all I know I may be way off here, and any advice would be appreciated

Thanks