Do not forget the 5.2 and the 5.9 dodge motors. They put out in 1994 alone 220-230 horse. They are supposed to be a pretty easy swap. The only thing is that you need to use the gauges out ot the ZJ.
1969 Scrambler...well, 1969 Jeepster 225 V6, TH400 trans, glass Scrambler body.