1971 CB750K - Adding drag pipes and K&N air filters. Rejetting Carbs?

[Jakevidio]

I'm getting some new pipes and air filters for my '71 CB750K
The parts I'm getting are as follows:

Chrome TT Drag Pipes
Chrome Slash Cut Drag Pipes with welded on brackets.
MAC Products - Made in U.S.A. - Set of 4
Fits: Honda CB750K (1969-76)
Part #: 001-1306

ALSO:
K&N Universal Performance Air Filters
RC-2314

I was told I will have to rejet the carbs.  Any tips or advice?  Perhaps a walkthrough I can find online?
I've never done this before.
Thanks for your time.

[Re-run]

The the drags will be loud. Be prepared for that.
The K&Ns, are they pods?
If so, then be ready to know your carbs more than you ever wanted.
You WILL be jetting. Even worse, there is no 1 jet size that works on every bike.
You will need to get some idle and main jets and then it is trial and error pretty much.

Best I could say is to get 2 steps up for both idle and mains and set the air screw about 1.5 turns out. Needle clip in the middle position.
Start there. Be ready to clean your plugs a lot and you may need a couple sets.

You are aiming for a light chocolate brown. So start the bike and let it idle for a while and kill it with the switch. Pull plugs and see what color they are. If a dark brown, turn out the mix screw another half turn. CLean the plugs and spray with carb cleaner, allow to dry and try again.

After that, then it is time to take the bike out and run it will keeping it about 4500 rpm. Pull clutch and kill at same time after riding like that a few minutes. Make sure you get to 5th gear in this test. If the color is dark again, then drop the clip 1 position. Clean and repeat.
From there, Do a high rpm, high speed test> Keep them Revs up to 8000 and go through the gears, keep on it hard! Keep the revs up and then pull clutch/kill engine. Make sure you do not let out the clutch till stopped. Check color again. If dark, drop 1 size, if very light, go up.

Best I can really give you. It is a lot of trial and error.

[Jakevidio]

Wow! Thank you for being so thorough. The K&Ns are indeed pods. Here's a pic: http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=150430098829&viewitem=&sspagename=STRK%3AMEWAX%3AIT I'll have to see what size my jets are before I get started. Any suggestions on where I could get a few different jet sizes?

[woodsrider250]

Drag pipes will be LOUD LOUD LOUD.  Like ear pearcing.

[Jakevidio]

Are these 6-Sigma Carb Rejet Kits any good?
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=230464915965&viewitem=&sspagename=STRK%3AMEWAX%3AIT

Is there something else you'd recommend?

[Re-run]

It is a bunch of flashy wording is all. There is NO 1 jet kit that works on every bike of that style, stock or modded. If it did, why would racers back in the day keep lots of jets on hand?
It is advertising and nothing more. Throwing larger jets on does not automatically increase power like they want to claim. I wish it did but you would get more out of a decent port job with stock jets then you would just putting in those jets.

That said, the quality is probably ok but no better than anything else most likely.