you dont have to remove the balance shaft but the balance shaft gear has to come off, its probably better if you dont. this is from zzp's website To run the *double roller, the balance shaft gear must be removed. To save additional weight the balance shaft can removed altogether but this requires plugging the rear oiling hole. The Rollmaster has a much tighter fit, so the timing chain tensioner is no longer used.
I dont think anyone makes a balance shaft delete kit.
this is from zzp's website: 125+ # valve springs are too much for the stock timing chain and dampener, the Rollmaster timing chain is thicker than stock, so you will also want the machined oil pump cover and either two standard front cover gaskets or our garlock front cover gasket to give the Rollmaster some extra clearance
edit for additional info: if you do the double roller timing chain it is a good idea to get the crank pulley machined for a proper fit. the double roller will go on and work but its not a perfect fit. taking the double roller to a machine shop with an oem roller for them to match will help a lot. while you are there, if you have an extra front cover plate with the oil pump cover still on, you can have them take the oil pump cover off and machine a small amount off then reinstall it. I cant remember exactly how much has to come off but its something like .005"
