I was originally going to put a TT.46 in my OMP 540 that I'm using in my Somethin' Extra. Then I thought I could just buy another TT. Then my dad suggested why don't I go bigger. So now I'm confused on what engine I should get. Should I stay with TT .46, or go with bigger 2-stroke or 4-stroke?? What would you guys recommend and what brand of each kind????