I have 86mm cp piston rings, ended up having 86.5mm pistons so these are unused and extra
$100

sr flywheel, needs a resurface but besides that its a flywheel
$40

actuator that came with my 2871, has a 14pound spring, im sure you can make it work with a t28 or something to up your boost a little
$50

more stuff will be added prob keep an eye out