Qsc clutch kit questions

After I put on my 26" swamplites I lost a lot of my bottom end. With stock tires and wheels I could just punch it from a stand still and it would wheelie with ease now not so much and does not pull as hard. Will just a kit bring that back? Only clutch experience I have is putting a CV tech on a can am I had and that was like adding 10 hp to that. Would I get more of what I want from a full primary from rvs? Thanks for any info