200 sx questions

[canadiandevil2]

I just got a '86 200 sx given to me but it needs a new motor. i was wondering how much work it would be to put a new engine in it. also i have an '84 200 M and i was wondering would that engine fit into the SX and if not what engine(s) would. So really im asking would it be worthwile to put a new engine in it or just sell it.

[Rockthunder]

The 200m engine will not fit. In fact I think the 86-88 200sx motor is the only one of its kind. The 86-87 ATC200x has the same top end as well as the xr200r.