please see my post in the other thread.
the cheapest solution is to swap in an ej22, 2.2L engine from a 95 auto trans legacy. they are amazingly reliable, take a lot of abuse and will run for more than 400k km if you keep oil in it.
it is a ''plug n' play'' engine and an easy swap.
you can look for a replacement engine on www.car-part.com
. sort by distance if you have a zip code.