teach me about cams.

BTW im not bs-ing around. I literally don't know much bout selecting the right cam and stuff. The gt40p's are out of the question, I have a pair of headers that won't fit the gt40's. Help.

My future setup will probably include Nitrous (dry 125 shot).
p.s. is this a good head ?

Procomp High Performance Aluminum Alloy SBF Heads. Part number PC3036. These heads feature a multi-angle seat design for performance valve springs. In addition, they have hardened seats and bronze valve guides. The advanced port design allows greater flow. This is the 175cc, angled plug design. The 60cc combustion chambers are machined for 2.02"/1.60" intake/exhaust valves.

You can find the heads on ebay. http://cgi.ebay.com/ebaymotors/SBF-...tegoryZ33617QQihZ006QQitemZ160103610769QQrdZ1