how do I tell what kind of cam and lifters i have?

Those lifters sure are expensive no? Especially for your set up. These would work fine at less than 1/2 of what those cost.

http://www.hughesengines.com/Index/...ZW5naW5lcw==&level1=TGlmdGVycw==&partid=11032

These are 1/4th the cost......

http://www.summitracing.com/parts/SUM-HT2011/