now ive got anther question, what are the engine codes for the 6.5 and what do they mean as to horse power nubers etc. i was doing a bit of cleanup in the enginebay and noticed that my valve cover said 200hp, now the 93 and 94 i had before i dont remember what they were rated at and wonder if theyre were any differences. but i would like to know for research sake.

check out the FAQs section at the top of the 6.5 forum. Should find all that you seek

That's the advertised hp and RWHP might be 150-180 depending on how crimped the downpipe and if you have intake restrictions like the snorkel and EGR cast web.
The faqs is a good beginning to understaanding this truck but there is always more to know.