[bigshrimpin]

Any of the 2.0L or 2.4L v6's (135hp - 220hp) will bolt up to that mid section. (I believe the newer 2.5L will be fine too, but I don't know that for sure).

Limitations . . .

if he is just getting a new undressed powerhead (i.e. no carbs, flywheel, electrical parts, etc.) then he should stick with a 150, 175 with verticle reeds.

if he can find a Dressed 2.4L 175hp or 200hp with horizontal reeds and a cowling . . . he'll be rock'in.

The nice part about the 150 is that the gear ratio is 2:1. You can generate a lot of torque with a 2.4L powerhead and that gearbox!!