wow man, that blows
you will need major head work
in fact id recommend dumping that head cause chances are the guides are bent anyway, and headwork can tend to get expensive by itself
you should be able to find an h22a head used around here for like 400 bux or so, maybe less, depends on wear etc.
ur rods arent bent, that mechanic is a bonehead
u might have dinged your pistons, but u can keep em if u run 93 octane all the time to prevent detonation. u should be running minimum of 91 in that motor anyway.
ull need timing belt, tensioner, head, and thats probably it.
i just finished putting my engine back in my car an hour ago, built up the tranny a little, added ACT kit, changed synchros, added type-S cams and skunk2 gears, changed the rubber band
engine had 40k on it but i was takin it out anyway so might as well change the belt
tell your friend to forget all the V8 stuff, he'll be snapping bolts left and right and your motor will leak oil after the work.
ill make you up a little pictoral how-to, its late tho so PM me and ill get u it soon
lata
~boomer