Is this a good combo
 

I have an 02 3500 6 speed. All stock except silencer ring removed. I'm about to put a Rollin smoke diesel 5 in exzaust,100 horseinjectors,BHAF,fass fuel Pump,gauges,smarty. Is that a good order and combo it's my dd and I haul goosnecks couple times a year.

I'd say u have a good combo...u need a turbo next.

X 2 Good Combo!! Just be sure you Get that Fass System and The gauges hooked up before the Injectors and the Smarty.:c:

I would say with the injector size and stock turbo she might get a little toasty at times. so a small turbo upgrade would also be good.

What's a good turbo to with that combo and still be able to tow heavy.

thats a good combo, i would say you would be fine with your stock turbo and 100hp injectors if you didnt tow but sense you do i would do a 62mm upgrade

I was told I need head bolt and knew piston to hold the pressure

yeah arp head studs would give you piece of mind