162,000!!
Holy crap dude! Just drop the whole engine and put in an ls1 or 6.0, don't waste any more money or time on that engine unless its a complete rebuild. Save your money for a new engine, cuz new springs, cam, etc plus labor is prolly gonna run ya $2,000. That's 2 grand closer to an ls1 or 6.0 you could have.
I think hwyauto is charging like $1600 for a 6.0.

But, its your call, you may be an engine expert and that thing may be as clean and new as the first day you got it. But if you have driven it as hard as I think you have, that sucker is ready to lay down soon. First its an oil pump, then its something else.

Just my
Ron