hahahahaa.. you don't need the port & polish or the cam. After 200k, he will need new pistons as well as new rings, espeically if he wants to boost it.
Not the right engine, but the theory behind it is what you need to research:
http://www.c-speedracing.com/howto/motorbuild/build.php
The basic parts you will need on a motor with that kind of mileage will be:
oil pump
water pump
timing belt & tensioner
head gasket
pistons (comes with rings usually)
rods
main bearings
thrust washers
rod bearings
intake gasket
exhaust gasket
valve guides (optional, but I would)
cylinder honing
head bolts
and I'm sure there's more that I haven't thought of. You will need to enlist the help of a machine shop to do your honing and to spec your main/rod bearings and thrust washers so that they are of the right clearance. Incorrectly sized thrust washers can lead to crank-walk.

:rofl: I can't believe I got to use that so soon. HA!
Anyway, there's a good deal to it and you need to research as much as possible before delving in.