Can you take a closeup of the stem? That looks like hella stack with the Girvin and a pretty freakin' long stem. (given the vintage...it fits well)
That's going to be one peacefully quiet HT.
But remember, his grips are back more than a regular bar - thus the longer stem, to get the grips in the same reach spot.
I had a Haro e-stay bike years ago. Super quiet.