considering i replaced half the components on my engine, i was considering getting or doing a major cleaning job to my engine ... is there anything i should do or cover ... major wires and such and checmical i shouldnt use... let me know.

new:

water pump
fuel relay
alternator
oil pan
drive belt
wire set
spark plugs
air filter
battery
radiator hoses - upper/lower

I did this many times w/o problems. What you should do is:

do not hold the lance into the generator
dont do it when the engine is really hot
dont spray the manifold, catalytic converters and muffler
leave the engine idling
take out the floor panel, and clean it seperately
dont spray the components behind the firewall (battery, motor electronis, fuse box....)

The rest does not caused any problems.