The IG32 was originally designed by the excellent Australian designer Harvey Halvorsen (of the Halvorsen boating family),almost 40 years ago. This one is likely built by JiangHua in China, check the builders plate. There was one, 2005 I think, on our marina and I believe the owner was happy with it,until he went larger and sold to a TF member no longer posting,whose only complaint was accessing the bed in the bow cabin. I thought it was a very nice boat which held its appearance well. It had thrusters, bow and stern.
Others will know more about the engine but it should provide more than ample power for that boat. Earlier boats had either a single 120hp or 2 80hp twins. I recently inspected a different brand of boat with the same engine, generally highly regarded, where the raw water injection location into the exhaust had allowed water to stand and corrode out the turbo requiring replacement and exhaust modification.
You should have general and mechanical surveys carried out.
2005 Integrity 386 "Sojourn"