All, looking for some starting jetting recommendations. 87 top end with moderate porting, o-ring head and dome set to run on 110, stock carb bored to 41.5mm, Vforce 3 reeds. SB Designs Airbox Eliminator, Dr. Q 2.0 pipe. I was thinking maybe a 40 pilot and 460 main.

It should have a 6DK3 needle in the 2nd or 3rd clip position from the top clip position with a R-2 to R-6 389 series needle jet.  If the carb does not have these two items in it, none of the below information is valid.

Start large enough on the main jet to make it miss-fire at high RPM in the 3rd or 4th gear and then lean it down so that it does not miss-fire.  The Q pipes seldom use main jets smaller than a 450 or larger than 500.

Put a pilot jet in it than produces the correct running characteristics at an idle when the air screw is about 1.5 turns out.  The porting, pipe, and intake system do not usually affect the pilot jet size.  I seldom see the TM38/41.5 Mikuni use a pilot jet outside the range of 22.5 to 30.