Duncan racing & Trinity both 2 stroke & 4 stroke dominate mx stadium, tt racing at loretta lynn's they both have won several national championships. Yes trinity's bike came in pikes peak hill climb, & yes their customer service sucks. But i also heard they have gotten better. I have two motors done buy them. My first motor 350 stock stroke stage 2 rated at 70h.p. It was done back in 97 when Harry & Kim were doing the porting. Glenn was the service manager. Harry did my cylinders himself. This motor halls ass. My first top end job on these cylinders had to be done. So i stayed away from trinity because everbody said on the internet don't go to trinity. So i sent the cylinders to LRD got a report back on the port job they did said they could not have done any better. My 2 motor is a 535 cheetah tunnel ported done buy trinity the porting on the cheetahs are done buy CAD CNC machine. jeff at fastoys has this motor in his shop now ask jeff what's he thinks about trinity port work. If i was going to build another motor with stock cylinders and send them to trinity yes i would only if kim or harry do the porting. One more thing I forgot to add. The banshee called the Legend over at Glamis is built buy trinity that took Oldsmobile hill back 2003