his engine is an sts 5 port turbo (rs5)
Yep, Omar is right. I am very impressed with this little beast so far. I have had a few other high end, high dollar Italian motors and I was a little concerned that this motor, for the money, would be a slouch compared to those others. I'll be honest, this little dude does an excellent job. Doesn't hit quite as hard as the NOVAROSSI (which is a good thing on marginal traction surfaces) but she easily runs or should I say outruns just about anything out there.
The LHS has an asphalt track that I have been running on over a year and just 2 weeks ago I set the track lap record, tq'd and won the A Main with the motor. And that was against guys who held the lap record and usually dominate. That impressed me about this little engine. And heck for the money, you can't beat it! The piston & sleeve in a NOVAROSSI costs more than this STS RS5 engine with shipping to my door!
Good piece that Calandra is offering there in my opinion.