I just got the engine from RBMODS.
Wow it is now faster than my sirio 3port.
It's not fast as picco 7 port in my track but not by much. I can keep up with him all the way.
All in all, I am satisfied. $220 well spent. ( engine + LD Turbo II Pipe + Engine Mod).
I have examined the mod he did carefully. I am gonna try on a new engine Myself.