Bonito and Roma are solid performers. What size restrictors are you running? I live at 4000 feet and run a 7mm restrictor in buggy and 8 in truggy. You should probably be running larger at even higher altitude. I usually run a plus 4 in buggy and a 7 port of some kind in truggy. Bonito should put some pep in any buggy. Roma is good for truggy too. You can also remove a shim from a Nova to raise compression a tad.